[1] RIF Core Dialect (2010-06-22 23:52:50 +09:00 版) <http://www.w3.org/TR/2010/REC-rif-core-20100622/#RIF-Core_Presentation_Syntax>

[2] RIF Basic Logic Dialect (2010-06-22 23:52:50 +09:00 版) <http://www.w3.org/TR/2010/REC-rif-bld-20100622/#EBNF_Grammar_for_the_Presentation_Syntax_of_RIF-BLD_.28Informative.29>

[3] RIF Framework for Logic Dialects (2010-06-22 23:52:51 +09:00 版) <http://www.w3.org/TR/2010/REC-rif-fld-20100622/#EBNF_Grammar_for_the_Presentation_Syntax_of_RIF-FLD>

[4] RIF Production Rule Dialect (2010-06-22 23:52:51 +09:00 版) <http://www.w3.org/TR/2010/REC-rif-prd-20100622/#Presentation_syntax_.28Informative.29>