Michael Tarsi Decomposition of a Complete Multigraph into Simple Paths: Nonbalanced Handcuffed Designs. 60-70 1983 34 J. Comb. Theory, Ser. A 1 db/journals/jct/jcta34.html#Tarsi83 http://dx.doi.org/10.1016/0097-3165(83)90040-7