TY  - BOOK
AU  - Lefschetz, S
TI  - Applications of Algebraic Topology: Graphs and Networks The Picard-Lefschetz Theory and feynman Integrals
SN  - 038790137X
U1  - 517.5 
PY  - 1975///
CY  - New York
PB  - Springer-Verlag
KW  - Mathematics
N1  - with 52 IIIustrations
ER  -