Kovalev, Leonid V. (2007). "Quasiconformal geometry of monotone mappings". Journal of the London Mathematical Society. 75 (2): 391–408. CiteSeerX10.1.1.194.2458. doi:10.1112/jlms/jdm008.
Kovalev, Leonid V. (2007). "Quasiconformal geometry of monotone mappings". Journal of the London Mathematical Society. 75 (2): 391–408. CiteSeerX10.1.1.194.2458. doi:10.1112/jlms/jdm008.