[1] BERGE, C: Graphs and Hypeгgгaphs. Noгth Holland, Amsterdam-London, 1973, 396-397.
[2] HARARY F.:
Gгaph Theoгy. Addison-Wesley, Reading, Mass., 1969.
MR 0256911
[3] PIPPENGER N., GOLUMBIC M. CH.:
The Inducibility of a Gгaph. J. Comb. Theoгy (B)19, 1975, 189-203.
MR 0401552