TY  - BOOK
AU  - Boardman J M
AU  -  Vogt R M
TI  - Homotopy invariant algebraic structures on topological spaces
T2  - lecture notes in mathematics; 347
U1  - B316, L31 
PY  - 1973///
CY  - Berlin
PB  - Springer Verlag      
KW  - Topology
ER  -