%0 Journal Article %A LINQUAN MA %A THOMAS POLSTRA %A KARL SCHWEDE %A KEVIN TUCKER %T $F$-SIGNATURE UNDER BIRATIONAL MORPHISMS %J Forum of Mathematics, Sigma %D 2019 %V 7 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.1017/fms.2019.6/ %R 10.1017/fms.2019.6 %G en %F 10_1017_fms_2019_6