“Families of Gracefuls Spiders With ℓ(2k + 1) − K, ℓ(2k + 1) − K + 1 and ℓ(2k + 1) + K + 1 Legs”. Contemporary Mathematics 6, no. 1 (January 21, 2025): 730–742. Accessed December 24, 2025. https://ojs353.mebyme.cn/index.php/CM/article/view/5497.