The minimum span of L(2, 1)-labelings of certain generalized Petersen graphs. - Sarah Spence Adams; Jonathan Cass; Matthew Tesch; Denise Sakai Troxell; Cody Wheeland (Discret. Appl. Math., 2007)

On the hole index of L(2, 1)-labelings of r-regular graphs. - Sarah Spence Adams; Matthew Tesch; Denise Sakai Troxell; Bradford Westgate; Cody Wheeland (Discret. Appl. Math., 2007)