Korenkov, M. E., and Y. I. Kharkevych. “On the Asymptotic of Associate Sigma-Functions and Jacobi theta-Functions”. Ukrains’kyi Matematychnyi Zhurnal, Vol. 70, no. 8, Aug. 2018, pp. 1149-52, http://umj.imath.kiev.ua/index.php/umj/article/view/1625.