Gehring, F. W. (1973). «The Lp-integrability of the partial derivatives of a quasiconformal mapping». Acta Mathematica130: 265-277. ISSN0001-5962. doi:10.1007/BF02392268.
Gehring, F. W. (1973). «The Lp-integrability of the partial derivatives of a quasiconformal mapping». Acta Mathematica130: 265-277. ISSN0001-5962. doi:10.1007/BF02392268.