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@article{MAN_1968__175_161665, author = {W. MADER}, title = {\"Uber trennende {Eckenmengen} in homomorphiekritischen {Graphen.}}, journal = {Mathematische Annalen}, pages = {243--252}, publisher = {mathdoc}, volume = {175}, year = {1968}, zbl = {0171.22406}, url = {http://geodesic.mathdoc.fr/item/MAN_1968__175_161665/} }
W. MADER. Über trennende Eckenmengen in homomorphiekritischen Graphen.. Mathematische Annalen, Tome 175 (1968), pp. 243-252. http://geodesic.mathdoc.fr/item/MAN_1968__175_161665/