@INPROCEEDINGS{PtakWeberInner,
  MYNOTE =   { S1997 },
  Html =   { PtakWeberInner },
  AUTHOR =   {Pt{\'a}k, P. and Weber, H.},
  TITLE =   {Two remarks on orthoposets of closed subspaces in an
                  inner product space},
  BOOKTITLE =   {Proc. 54th Workshop on General Algebra},
  ADDRESS =   {Klagenfurt, Austria},
  YEAR =   {1997},
  MONTH =   {November},
  NOTE =   {Submitted},
  WHO =     {Navara},
}