ŞahinT. and YilmazM. (2010) “On singularities of the Galilean spherical darboux ruled surface of a space curve in $G_3$”, Ukrains’kyi Matematychnyi Zhurnal, 62(10), pp. 1377–1387. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2962 (Accessed: 4December2024).