1. A. D. Ado, in: New Aspects of Bronchial Asthma [in Russian], Moscow (1981), pp. 1?8.
2. S. V. Anichkov, in: Neuropharmacology [in Russian], Leningrad (1982), pp. 120?126.
3. A. V. Barysheva, Byull. �ksp. Biol. Med., No. 7, 74 (1982).
4. E. V. Gubler and A. A. Genkin, The Use of Nonparametric Statistical Criteria in Medico-Biological Research [in Russian], Leningrad (1973), p. 20.
5. G. K. Degteva, E. I. Belyaev, and A. P. Kalina, Zh. Mikrobiol., No. 8, 112 (1971).