The Vuorinen problem on the maximum of the conformal module
E. G. Emel'yanov, G. V. Kuz'mina

This publication is cited in the following articles:

1. J. Math. Sci. (N. Y.), 222:5 (2017), 645–689      
2. E. G. Emel'yanov, “The tangent properties of trajectories of certain two quadratic differentials”, J. Math. Sci. (N. Y.), 200:5 (2014), 568–576