%0 Journal Article %A Karina Olszak %A Zbigniew Olszak %T The equi-affine and Frenet curvatures of curves in pseudo-Riemannian 2-manifolds %J Colloquium Mathematicum %D 2017 %P 103-112 %V 150 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/articles/10.4064/cm7167s-3-2017/ %R 10.4064/cm7167s-3-2017 %G en %F 10_4064_cm7167s_3_2017