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@article{10_4064_fm_90_2_177_180, author = {N. Williams}, title = {Tightly packed families of sots}, journal = {Fundamenta Mathematicae}, pages = {177--180}, publisher = {mathdoc}, volume = {90}, number = {2}, year = {1975}, doi = {10.4064/fm-90-2-177-180}, language = {en}, url = {http://geodesic.mathdoc.fr/articles/10.4064/fm-90-2-177-180/} }
N. Williams. Tightly packed families of sots. Fundamenta Mathematicae, Tome 90 (1975) no. 2, pp. 177-180. doi : 10.4064/fm-90-2-177-180. http://geodesic.mathdoc.fr/articles/10.4064/fm-90-2-177-180/
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