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@article{JRAM_1973__259_151298, author = {Robin Brooks}, title = {On the sharpness of the ... 2 and ... 1 {Nielsen} numbers.}, journal = {Journal f\"ur die reine und angewandte Mathematik}, pages = {101--108}, publisher = {mathdoc}, volume = {259}, year = {1973}, zbl = {0273.55011}, url = {http://geodesic.mathdoc.fr/item/JRAM_1973__259_151298/} }
Robin Brooks. On the sharpness of the ... 2 and ... 1 Nielsen numbers.. Journal für die reine und angewandte Mathematik, Tome 259 (1973), pp. 101-108. http://geodesic.mathdoc.fr/item/JRAM_1973__259_151298/