@article{10_21136_MB_1998_125971, author = {Janaqi, Stefan and Lescure, F. and Maamoun, M. and Meyniel, H.}, title = {Digraphs contractible onto $\sp *K\sb 3$}, journal = {Mathematica Bohemica}, pages = {365--369}, publisher = {mathdoc}, volume = {123}, number = {4}, year = {1998}, doi = {10.21136/MB.1998.125971}, mrnumber = {1667109}, zbl = {0934.05069}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.21136/MB.1998.125971/} }