References
- Pasific J. Math. v.28 F'-space and their products with P=space W. W. Comport;N. Hindman;S. Negrepontis
- Topol. and its Appl. v.72 Minimal covers and filter spaces C. I. Kim
- Extensions and Absolutes of Hausdorff J. Porter;R. G. Woods
- Topol. and its Appl. v.17 The smallest basically disconnected preimage of a space J. Vermeer