Helicoidal Surfaces Satisfying <tex>$\boldsymbol{\varDelta}^{\boldsymbol{III}} \boldsymbol{r}=\boldsymbol{Ar}$</tex>

Helicoidal Surfaces Satisfying $\boldsymbol{\varDelta}^{\boldsymbol{III}} \boldsymbol{r}=\boldsymbol{Ar}$ | IEEE Conference Publication | IEEE Xplore