Geodesic
The structure of the class of graphs with a given cyclomatic matrix
Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 29 (1974) no. 3 
E. A. Dinits; G. A. Slivinskaya. The structure of the class of graphs with a given cyclomatic matrix. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Tome 29 (1974) no. 3. http://geodesic.mathdoc.fr/item/RM_1974_29_3_a15/
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[1] Lefgren, “Reshenie problemy realizuemosti neizbytochnymi bulevymi skhemami”, Kibernetich. sb., 5 (1962)

[2] A. A. Zykov, Teoriya konechnykh grafov, Novosibirsk, 1969