1. H.Faissner et al.: Proc. Internat. Neutrino Conference, Baksan 1977, Vol. 1, p. 250, Markov et al., ed. Moscow, 1978
2. E.Radermacher: Proc. of the Ben Lee Memorial Internat. Conference, FNAL 1977, p. 387, D. B. Cline, F. E. Mills, eds. Batavia, 1978
3. D.Hoffmann: Proc. Internat. Neutrino Conference, Purdue 1978, p. 967, C. Fowler, ed. Lafayette, 1979
4. G.Puglierin: Proc. Top. Conference on Neutrino Physics, Oxford 1978, p. 182, A.G.Michette, P.B.Renton, eds. Rutherford, Chilton, Didcot 1978
5. E.Radermacher: Proc. XIX International Conference on High Energy Physics, Tokyo 1978, p. 321, S.Homma, M.Kawaguchi, H.Miyazawa, eds. Int. Academic Printing Japan, 1979