Corcino, Roberto B., Malusay, Jeneveb T., Cillar, Joy Antonette, Rama, Gladys Jane, Silang, Oscar Vincent, & Tacoloy, Ianna Marie. (2019). Analogies of the Qi formula for some Dowling type numbers. Utilitas Mathematica, 111. Retrieved from https://utilitasmathematica.com/index.php/Index/article/view/1425