TY  - BOOK
AU  - Lefschetz,S.
TI  - Applications of algebraic topology: graphs and networks : the Picard-Lefschetz theory and Feynman integrals 
SN  - 038790137X :
U1  - 512.86 
PY  - 1975///
CY  - New York
PB  - Springer-Verlag
KW  - Algebraic topology
KW  - Graph theory
KW  - Electric networks
KW  - Feynman integrals
KW  - Picard-Lefschetz theory
N1  - Includes bibliographical references and index
ER  -