%0 Journal Article %A Petkov, Igor %A Salimov, Ruslan %A Stefanchuk, Mariia %T Nonlinear Beltrami equation: lower estimates of Schwarz lemma’s type %J Canadian mathematical bulletin %D 2024 %P 533-543 %V 67 %N 3 %U http://geodesic.mathdoc.fr/articles/10.4153/S0008439523000942/ %R 10.4153/S0008439523000942 %F 10_4153_S0008439523000942