“Families of Gracefuls Spiders With ℓ(2k + 1) − K, ℓ(2k + 1) − K + 1 and ℓ(2k + 1) + K + 1 Legs”. Contemporary Mathematics , vol. 6, no. 1, Jan. 2025, pp. 730-42, https://doi.org/10.37256/cm.6120255497.