Uy, J.R., Soriano, J.K., Romero, C.F., Rosario, L.M., Lee, H., Ting, J.A., Ramos, H., Siringan, M.A. and Tumlos, R. 2012. Bacterial inactivation of Bacillus subtilis using microwave atmospheric pen plasma (APP). Proceedings of the Samahang Pisika ng Pilipinas, 30(1), SPP2012-2B-3. URL: https://proceedings.spp-online.org/article/view/SPP2012-2B-3.