@inproceedings{SPP-2021-2B-04, title={Vortex beam interaction with a step}, volume={39}, booktitle={Proceedings of the Samahang Pisika ng Pilipinas}, author={Banguilan, Dina Grace C. and Hermosa, Nathaniel P.}, year={2021}, pages={SPP-2021-2B-04}, url={https://proceedings.spp-online.org/article/view/SPP-2021-2B-04} }