H
[HS89] Jaakko Hintikka and Gabriel Sandu. Informational Independence as a Semantical Phenomenon. In Proceedings of the 8th International Congress of Logic, Methodology and Philosophy of Science, Studies in Logic and the Foundations of Mathematics 70, pages 571-589. North-Holland, January 1989. 
@inproceedings{iclmps1989-HS,
  author =              {Hintikka, Jaakko and Sandu, Gabriel},
  title =               {Informational Independence as a Semantical
                         Phenomenon},
  editor =              {Fenstad, Jens Erik and Frolov, Ivan T. and
                         Hilppinen, Risto},
  booktitle =           {{P}roceedings of the 8th {I}nternational {C}ongress
                         of {L}ogic, {M}ethodology and {P}hilosophy of
                         {S}cience},
  publisher =           {North-Holland},
  series =              {Studies in Logic and the Foundations of Mathematics},
  volume =              {70},
  pages =               {571-589},
  year =                {1989},
  month =               jan,
  doi =                 {10.1016/S0049-237X(08)70066-1},
}
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