T. Pongsritasana, K. Seejorn, L. Salung, Y. Chongpensuklert, and S. Sukasem, “Fertilization Rate by Intracytoplasmic Sperm Injection (ICSI) of Human Oocytes”, SRIMEDJ, vol. 30, no. 6, pp. 609–617, Jan. 2016.