[1] Favaron O., Lonc Z., Truszcyński M.:
Decompositions of Graphs into Graphs with Three Edges. Ars Combinatoria 20 (1985), 125-146.
MR 0824855
[3] Lovász L., Plummer M. D.:
Matching Theory. Akadémiai Kiadó, Budapest 1986.
MR 0859549
[4] Ryjáček Z.:
Factors and Circuits in $K\sb {1,3}$-free Graphs. Combinatorics and Graph Theory, Banach Center Publications, Vol. 25, PWN, Warsaw 1989.
MR 1097643
[5] Sumner D. P.:
Graphs with l-factors. Proc. Amer. Math. Soc. 42 (1974), 8-12.
MR 0323648