Families of Gracefuls Spiders with ℓ(2k + 1) − k, ℓ(2k + 1) − k + 1 and ℓ(2k + 1) + k + 1 Legs. Contemp. Math. [Internet]. 2025 Jan. 21 [cited 2025 Dec. 24];6(1):730-42. Available from: https://ojs353.mebyme.cn/index.php/CM/article/view/5497