J. Hardy

SUBGROUPS OF FREE TOPOLOGICAL GROUPS AND FREE TOPOLOGICAL PRODUCTS OF TOPOLOGICAL GROUPS

R. Brown, J. Hardy, 1975 .

Topological groupoids: II. Covering morphisms and G‐spaces

Ronald Brown, J. Hardy, G. Danesh-Naruie, 2009 .

Applications of the Stone-Čech compactification to free topological groups

S. Morris, H. Thompson, J. Hardy, 1976 .

Topological groupoids: I. universal constructions

Ronald Brown, J. Hardy, 1976 .