Permanents, Pfaffian orientations, and even directed circuits.

Robertson, Neil, Seymour, P.D., and Thomas, Robin. "Permanents, Pfaffian orientations, and even directed circuits.." Annals of Mathematics. Second Series 150.3 (1999): 929-975. <http://eudml.org/doc/120561>.

@article{Robertson1999,
author = {Robertson, Neil, Seymour, P.D., Thomas, Robin},
journal = {Annals of Mathematics. Second Series},
keywords = {Pfaffian orientations; permanent; determinant; Pólya matrix; characterization; polynomial-time algorithm},
language = {eng},
number = {3},
pages = {929-975},
publisher = {Princeton University, Mathematics Department, Princeton, NJ; Mathematical Sciences Publishers, Berkeley},
title = {Permanents, Pfaffian orientations, and even directed circuits.},
url = {http://eudml.org/doc/120561},
volume = {150},
year = {1999},
}

TY - JOUR
AU - Robertson, Neil
AU - Seymour, P.D.
AU - Thomas, Robin
TI - Permanents, Pfaffian orientations, and even directed circuits.
JO - Annals of Mathematics. Second Series
PY - 1999
PB - Princeton University, Mathematics Department, Princeton, NJ; Mathematical Sciences Publishers, Berkeley
VL - 150
IS - 3
SP - 929
EP - 975
LA - eng
KW - Pfaffian orientations; permanent; determinant; Pólya matrix; characterization; polynomial-time algorithm
UR - http://eudml.org/doc/120561
ER -