%0 Book Section %A MacPherson, Robert %T The combinatorial formula of Gabrielov, Gelfand and Losik for the first Pontrjagin class %B Séminaire Bourbaki : vol. 1976/77, exposés 489-506 %A Collectif %S Séminaire Bourbaki %Z talk:497 %D 1978 %P 105-124 %N 19 %I Springer-Verlag %U http://www.numdam.org/item/SB_1976-1977__19__105_0/ %G en %F SB_1976-1977__19__105_0