1. Balling, N., Haenel, R., Ungemach, P., Vasseur, G., and Wheildon, J.: 1981, Preliminary Guidelines for Heat Flow Density Determination, Dir.-Gen. for Research, Science and Education Brussels, EUR 7360 EN, 32 p.
2. Benfield, A. E.: 1939, The Terrestrial Heat Flow in Great Britain, Proc. Roy. Soc., A, London, 1973, 428–450.
3. Bird, P., Toksöz, M.N., and Sleep, N.H.: 1975, ‘Thermal and Mechanical Models of Continent — Continent Convergence Zones’, J. Geophys. Res. 80, 4405–4416.
4. Geophys. Monogr. 8;EC Bullard,1965
5. Carslaw, H. S. and Jaeger, J. C: 1979, Conduction of Heat in Solids, 2nd edit., Clarendon, Oxford, 510 p.