Chaiwoot Moolsombut และ Wanida Hemakul. (2009) Sarvate-beam group divisible designs and restrivted simple 1-designs. Chulalongkorn University:ม.ป.ท.Chaiwoot Moolsombut และ Wanida Hemakul. 2009. Sarvate-beam group divisible designs and restrivted simple 1-designs. ม.ป.ท.:Chulalongkorn University;Chaiwoot Moolsombut และ Wanida Hemakul. Sarvate-beam group divisible designs and restrivted simple 1-designs. ม.ป.ท.:Chulalongkorn University, 2009. Print.