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@article{PORMA_1978__37_1-2_115328, author = {Doyle, P.H.}, title = {A criterion for the noncellularity of arcs}, journal = {Portugaliae mathematica}, pages = {11--11}, publisher = {mathdoc}, volume = {37}, number = {1-2}, year = {1978}, mrnumber = {0620293}, zbl = {0472.57011}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1978__37_1-2_115328/} }
Doyle, P.H. A criterion for the noncellularity of arcs. Portugaliae mathematica, Tome 37 (1978) no. 1-2, p. 11. http://geodesic.mathdoc.fr/item/PORMA_1978__37_1-2_115328/