Ruled Weingarten surfaces in the Galilean space. - Zeljka Milin Sipus (Period. Math. Hung., 2008)

Surfaces of Constant Curvature in the Pseudo-Galilean Space. - Zeljka Milin Sipus; Blazenka Divjak (Int. J. Math. Math. Sci., 2012)

Translation surfaces of constant curvatures in a simply isotropic space. - Zeljka Milin Sipus (Period. Math. Hung., 2014)