1. L. V. Ahlfors,Conformal Invariants: Topics in Geometric Function Theory, McGraw-Hill, New York, 1973.
2. J. M. Anderson, J. Clunie and Ch. Pommerenke,On Bloch functions and normal functions, J. Reine Angew. Math.270 (1974), 12–37.
3. J. Becker,Conformal mappings with quasiconformal extensions, inAspects of Contemporary Complex Analysis, D. A. Brannan and J. G. Clunie (eds.), Academic Press, London, 1980.
4. A. Chang, M. M. Schiffer and G. Schober,On the second variation for univalent functions, J. Analyse Math.40 (1981), 203–238.
5. J. L. Fernández,On the coefficients of Bloch functions, J. London Math. Soc.29 (1984), 94–102.