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@article{PORMA_1962__21_3_114891, author = {Sandler, Reuben}, title = {The collineation groups of some finite projective planes}, journal = {Portugaliae mathematica}, pages = {189--199}, publisher = {mathdoc}, volume = {21}, number = {3}, year = {1962}, mrnumber = {0148714}, zbl = {0136.30304}, language = {en}, url = {http://geodesic.mathdoc.fr/item/PORMA_1962__21_3_114891/} }
Sandler, Reuben. The collineation groups of some finite projective planes. Portugaliae mathematica, Tome 21 (1962) no. 3, pp. 189-199. http://geodesic.mathdoc.fr/item/PORMA_1962__21_3_114891/