added some RD links

@@ -17,6 +17,10 @@
       owl:imports <http://www.reportinghub.no/ep/schema/1.0/core> , <http://www.reportinghub.no/ep/schema/1.0/equipment> , <http://www.reportinghub.no/ep/schema/1.0/facility> , <http://www.reportinghub.no/ep/schema/1.0/material> ;
       owl:versionInfo "0.1.0"^^xsd:string .
 
+<http://www.reportinghub.no/ep/schema/equipment#CasingString>
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS5793773"^^xsd:string .
+
 <http://www.reportinghub.no/ep/schema/material#Condensate>
       rdf:type ep-well:FluidComponentType .
 
@@ -53,7 +57,9 @@ ep-well:ClassOfWellBoreSectionBySize
 ep-well:Cluster
       rdf:type owl:Class ;
       rdfs:label "cluster"^^xsd:string ;
-      rdfs:subClassOf ep-core:PhysicalObject .
+      rdfs:subClassOf ep-core:PhysicalObject ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS8015624968"^^xsd:string .
 
 ep-well:FluidComponentType
       rdf:type rdfs:Class ;
@@ -207,7 +213,9 @@ ep-well:Well
       rdf:type owl:Class ;
       rdfs:comment "well for all of its life"^^xsd:string ;
       rdfs:label "well (whole life)"^^xsd:string ;
-      rdfs:subClassOf ep-well:TemporalPartOfAWell .
+      rdfs:subClassOf ep-well:TemporalPartOfAWell ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS16458543"^^xsd:string .
 
 ep-well:WellBore
       rdf:type owl:Class ;
@@ -218,7 +226,9 @@ ep-well:WellBore
               [ rdf:type owl:Restriction ;
                 owl:cardinality "1"^^xsd:nonNegativeInteger ;
                 owl:onProperty ep-core:name
-              ] .
+              ] ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS1714464911"^^xsd:string .
 
 ep-well:WellBoreBottom
       rdf:type owl:Class ;
@@ -248,7 +258,9 @@ ep-well:WellBoreSection
       rdf:type owl:Class ;
       rdfs:comment "spatial part of a wellbore that is a section across it"^^xsd:string ;
       rdfs:label "wellbore section"^^xsd:string ;
-      rdfs:subClassOf ep-well:SpatialPartOfAWellBore .
+      rdfs:subClassOf ep-well:SpatialPartOfAWellBore ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS16453593"^^xsd:string .
 
 ep-well:WellBoreTightnessType
       rdf:type rdfs:Class ;
@@ -280,28 +292,36 @@ ep-well:WellHead
       rdf:type owl:Class ;
       rdfs:comment "spatial part of a well that is a well head"^^xsd:string ;
       rdfs:label "well head"^^xsd:string ;
-      rdfs:subClassOf ep-well:SpatialPartOfAWell .
+      rdfs:subClassOf ep-well:SpatialPartOfAWell ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS13609850"^^xsd:string .
 
 ep-well:averageBottomHolePressure
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
       rdfs:comment "class_of_indirect_property that is the average pressure at the bottom of a wellbore"^^xsd:string ;
       rdfs:domain ep-well:TemporalPartOfAWellBore ;
       rdfs:label "average bottom hole pressure"^^xsd:string ;
-      rdfs:range ep-core:Pressure .
+      rdfs:range ep-core:Pressure ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS1748178911"^^xsd:string .
 
 ep-well:averageBottomHoleTemperature
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
       rdfs:comment "class_of_indirect_property that is the average temperature at the bottom of a wellbore"^^xsd:string ;
       rdfs:domain ep-well:TemporalPartOfAWellBore ;
       rdfs:label "average bottom hole temperature"^^xsd:string ;
-      rdfs:range ep-core:Temperature .
+      rdfs:range ep-core:Temperature ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS1748247961"^^xsd:string .
 
 ep-well:azimuth
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
       rdfs:comment "class_of_indirect_property that is the inclination of wellbore orientation at a position within a wellbore"^^xsd:string ;
       rdfs:domain ep-well:PositionWithinWellBore ;
       rdfs:label "azimuth"^^xsd:string ;
-      rdfs:range ep-core:PlaneAngle .
+      rdfs:range ep-core:PlaneAngle ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS17688492"^^xsd:string .
 
 ep-well:bottomHoleMeasuredDepth
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
@@ -399,7 +419,9 @@ ep-well:inclination
       rdfs:comment "class_of_indirect_property that is the inclination of wellbore orientation at a position within a wellbore"^^xsd:string ;
       rdfs:domain ep-well:PositionWithinWellBore ;
       rdfs:label "inclination"^^xsd:string ;
-      rdfs:range ep-core:PlaneAngle .
+      rdfs:range ep-core:PlaneAngle ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS17688057"^^xsd:string .
 
 ep-well:initialBottomHoleMeasuredDepth
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
@@ -419,7 +441,9 @@ ep-well:measuredDepth
       rdfs:comment "class_of_indirect_property that is the measured depth of a spatial part of a wellbore"^^xsd:string ;
       rdfs:domain ep-well:SpatialPartOfAWellBore ;
       rdfs:label "measured depth"^^xsd:string ;
-      rdfs:range ep-core:Length .
+      rdfs:range ep-core:Length ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS1724710171"^^xsd:string .
 
 ep-well:measuredDepthOfPlugTop
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
@@ -454,14 +478,18 @@ ep-well:plannedBottomHoleMeasuredDepth
       rdfs:comment "class_of_indirect_property that is the planned measured depth to the bottom of a wellbore at the end of a temporal part of a wellbore"^^xsd:string ;
       rdfs:domain ep-well:TemporalPartOfAWellBore ;
       rdfs:label "planned bottom hole measured depth"^^xsd:string ;
-      rdfs:range ep-core:Length .
+      rdfs:range ep-core:Length ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS1035458501"^^xsd:string .
 
 ep-well:plannedPilotBottomHoleMeasuredDepth
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
       rdfs:comment "class_of_indirect_property that is the planned measured depth to the bottom of the pilot hole of a wellbore at the end of a temporal part of a wellbore"^^xsd:string ;
       rdfs:domain ep-well:WellBorePilotHole ;
       rdfs:label "planned pilot bottom hole measured depth"^^xsd:string ;
-      rdfs:range ep-core:Length .
+      rdfs:range ep-core:Length ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS17851115"^^xsd:string .
 
 ep-well:plannedPilotBottomHoleTrueVerticalDepth
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
@@ -509,14 +537,18 @@ ep-well:shutInCasingPressure
       rdfs:comment "class_of_indirect_property that is the shut in casing pressure for a wellbore"^^xsd:string ;
       rdfs:domain ep-well:TemporalPartOfAWellBore ;
       rdfs:label "shut in casing pressure"^^xsd:string ;
-      rdfs:range ep-core:Pressure .
+      rdfs:range ep-core:Pressure ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS17788782"^^xsd:string .
 
 ep-well:shutInDrillPipePressure
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
       rdfs:comment "class_of_indirect_property that is the shut in drill pipe pressure for a wellbore"^^xsd:string ;
       rdfs:domain ep-well:TemporalPartOfAWellBore ;
       rdfs:label "shut in drill pipe pressure"^^xsd:string ;
-      rdfs:range ep-core:Pressure .
+      rdfs:range ep-core:Pressure ;
+      ep-core:seeReferenceData
+              "http://posccaesar.org/rdl/RDS17887970"^^xsd:string .
 
 ep-well:stratigraphyDescription
       rdf:type owl:DatatypeProperty ;