Glaser, Leslie C..
Geometrical Combinatorial Topology / - 1st ed / - London S.W.1 : Van Nostrand Reinhold Company Ltd. , 1982 - p.175 :
0-442-78283-7
Mathematics
B316 / L0.2;1
Geometrical Combinatorial Topology / - 1st ed / - London S.W.1 : Van Nostrand Reinhold Company Ltd. , 1982 - p.175 :
0-442-78283-7
Mathematics
B316 / L0.2;1