[1] P. S. ALEXANDROV: Combinatorial Topology. (in Russian), Gostechizdat., Moscow - Leningrad, 1947.
[2] S. EILENBERG N. STEENROD: 
Foundations of Algebraic Topology. Princeton University Press, Princeton, 1952. 
MR 0050886[4] O. HÁJEK: 
Homological fixed point theorems. this journal, CMUC, 5, 1 (1964). 
MR 0177409[5] K. KURATOWSKI: 
Topologie II. Monografie Matematyczne no. XXI, Warsaw - Wrocław, 1950.  
Zbl 0041.09604