“Certain Properties and Applications of $(\tau,\beta)$-Generalized Legendre Functions ${}^{\tau,\beta}P^\mu_\nu(z)$”. Neliniini Kolyvannya, vol. 15, no. 4, Dec. 2012, pp. 556-73, https://nosc.imath.kiev.ua/index.php/nosc/article/view/672.