Sevost'yanov, E. A. (2009). On the integral characterization of some generalized quasiregular mappings and the significance of the conditions of divergence of integrals in the geometric theory of functions. Ukrains’kyi Matematychnyi Zhurnal, 61(10), 1367-1380. https://umj.imath.kiev.ua/index.php/umj/article/view/3107