Sitora, Sadikova. “Research on Topological, Reciprocal Indices and Polynomials of the Line Graph of the Dutch Windmill Graph”. Journal of Research in Vocational Education 7, no. 12 (December 30, 2025): 4–7. Accessed March 4, 2026. https://bryanhousepub.com/index.php/jrve/article/view/2900.