Bekar, M., F. Hathout, and Y. Yayli. 2021. “Legendre Curves and the Singularities of Ruled Surfaces Obtained by Using Rotation Minimizing Frame”.
Ukrains’kyi Matematychnyi Zhurnal
73 (5): 589-601.
https://doi.org/10.37863/umzh.v73i5.895
.