1. A.J.Sievers: InSolar Energy Conversion-Solid-State Physics Aspects, ed. by B.O.Seraphin, Topics Appl. Phys.30 (Springer, Berlin, Heidelberg, New York (1979) pp. 57?114
2. D.K.Hale: J. Mater. Sci.11, 2105?2141 (1976)
3. J.P.Watt, G.F.Davies, R.J.O'Connell: Rev. Geophys.14, 541?563 (1976)
4. G.K.Batchelor: Annu. Rev. Fluid Mech.6, 227?255 (1974)
5. Electrical Transport and Optical Properties of Inhomogeneous Media, ed. by J.C.Garland and D.B.Tanner (American Institute of Physics, New York, 1978) pp. 2?416