Lando, Sergei K Alexander K
Graphs on surfaces and their applications - Berlin Springer 2004 - 455 - Encyclopaedia of mathematical sciences ; 00141 .
3540002030
51(02) EMS
Graphs on surfaces and their applications - Berlin Springer 2004 - 455 - Encyclopaedia of mathematical sciences ; 00141 .
3540002030
51(02) EMS