Deza, Michael; Frankl, Péter (1981). “Every large set of equidistant (0, +1, −1)-vectors forms a sunflower”. 《Combinatorica》 (영어) 1 (3): 225–231. doi:10.1007/BF02579328. ISSN0209-9683. MR637827.
Deza, Michael; Frankl, Péter (1981). “Every large set of equidistant (0, +1, −1)-vectors forms a sunflower”. 《Combinatorica》 (영어) 1 (3): 225–231. doi:10.1007/BF02579328. ISSN0209-9683. MR637827.
Deza, Michael; Frankl, Péter (1981). “Every large set of equidistant (0, +1, −1)-vectors forms a sunflower”. 《Combinatorica》 (영어) 1 (3): 225–231. doi:10.1007/BF02579328. ISSN0209-9683. MR637827.