Topology and its Applications
Topology and its Applications > 1995 > 61 > 3 > 229-240
Topology and its Applications > 1995 > 65 > 3 > 287-294
Topology and its Applications > 1997 > 77 > 1 > 51-56
Topology and its Applications > 1997 > 79 > 2 > 143-157