Ordinary differential equations and quasiconformal mappings

Agard, S.B., Kelingos, J.: On parametric representation for quasisymmetric functions. Comm. Math. Helv.44, 446?456 (1969)

Ahlfors, L.V.: Kleinsche Gruppen in der Ebene und im Raum. Festband zum 70. Geburtstag von Prof. R. Nevanlinna. Berlin-Heidelberg-New York: Springer 1966

Ahlfors, L.V.: Conditions for quasiconformal deformations in several variables. In: Contributions to analysis. London-New York: Academic Press 1974

Beurling, A., Ahlfors, L.V.: The boundary correspondence under quasiconformal mappings. Acta Math.96, 125?142 (1956)

Fefferman, Ch., Stein, E.M.:H p -spaces of several variables. Acta Math.129, 137?193 (1972)

Hille, E.: Lectures on ordinary differential equations. Reading: Addison-Wesley 1969

Reimann, H.M., Rychener, Th.: Funktionen beschränkter mittlerer Oszillation. Lecture Notes in Math.487. Berlin-Heidelberg-New York: Springer 1975

Stein, E.M.: Singular integrals and differentiability properties of functions. Princeton: University Press 1970

Schwartz, G.P.: Parametric representations of plane quasiconformal mappings. Thesis, University of Minnesota, 1970

Ziemer, W.P.: Change of variables for absolutely continuous functions. Duke Math. J.36, 171?178 (1969)

Zygmund, A.: Trigonometric series I. Cambridge, 1968