共 50 条
- [43] A NOTE ON MAPS SENDING OPEN SETS INTO OPEN SETS BOLLETTINO DELLA UNIONE MATEMATICA ITALIANA, 1990, 4B (02): : 423 - 427
- [49] STRUCTURE OF LINEAR HOMOGENEOUS SETS NOTICES OF THE AMERICAN MATHEMATICAL SOCIETY, 1974, 21 (02): : A293 - A293