Alfredo B. Villaceran Jr., Sofronio P. Kalaw, Pedrito S. Nitural, Evaristo A. Abella, and Renato G. Reyes, “Cultivation of Thai and Japanese strains of Pleurotus sajor – caju on rice straw - based Volvariella volvacea mushroom spent and composted rice straw in Central Luzon Region, Philippines”, Int. J. Agric. Tech., vol. 2, no. 1, pp. 69–75, Jun. 2006.