1. Richardson, S. W. & Oxburgh, E. R. Q. J. geol. Soc. Lond. 135 323–337 (1978).
2. Oxburgh, E. R., Richardson, S. W., Bloomer, J. R., Martin, A. & Wright, S. Seminar on Geothermal Energy Vol. 1, 155–173 (Commission of the European Communities, Brussels, 1977).
3. Wheildon, J., Francis, M. F. & Thomas Betts, A. Seminar on Geothermal Energy Vol. 1, 175–188 (Commission of the European Communities, Brussels, 1977).
4. Pugh, D. T. Limnol. Oceanogr. 22 581–596 (1977).
5. Bloomer, J. R., Richardson, S. W. & Oxburgh, E. R. in Terrestrial Heat Flow in Europe (eds Cermak & Rybach) 293–300 (Springer, Berlin, 1979).