@Misc{sg:OPENMATH2,
  OPTcrossref =  "",
  key =          "OpenMath",
  author =       {Abbott, J. and van Leeuwen, A. and Strotman, A.},
  title =        {{Objectives of OpenMath}},
  howpublished = "Avai\-lable from {\tt ht\-tp\-://www\-.rrz\-.uni\--koeln\-.de\-/the\-men\-/Com\-pu\-ter\-alge\-bra\-/Open\-Math/}",
  year =         1995,
  month =        Jan,
  Nonote =       "Preliminary version.",
  OPTannote =    ""
}