Bernatskaya, J.N. (2004) “Perturbation Method for a Parabolic Equation with Drift on a Riemannian Manifold”, Ukrains’kyi Matematychnyi Zhurnal, 56(2), pp. 148–159. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3739 (Accessed: 14 April 2025).