GDDs with Two Associate Classes and with Three Groups of Sizes 1, n, n and λ 1 < λ 2. - Wannee Lapchinda; Narong Punnim; Nittiya Pabhapote (TJJCCGG, 2012)

GDDs with two associate classes and with three groups of sizes 1, n and n. - Wannee Lapchinda; Narong Punnim; Nittiya Pabhapote (Australas. J Comb., 2014)