Palima, D.Z. and Daria, V.R.M. 2006. Common path interferometric techniques for removing the undiffracted beam in phase-only holographic generation of multifoci patterns. Proceedings of the Samahang Pisika ng Pilipinas, 24(1), SPP-2006-PR-01. URL: https://proceedings.spp-online.org/article/view/SPP-2006-PR-01.