%0 Journal Article %A Longyear, Judith Q. %T Non-Existence Criteria for Small Configurations %J Canadian journal of mathematics %D 1973 %P 213-215 %V 25 %N 1 %U http://geodesic.mathdoc.fr/articles/10.4153/CJM-1973-019-8/ %R 10.4153/CJM-1973-019-8 %F 10_4153_CJM_1973_019_8