1. Vodák F., Czech. J. Phys.B 22 (1972), 1067.
2. Kašpar I., Habilitation Thesis, Building Faculty, Czech Technical University, 1969.
3. Vodák F., Elektrotechnický čs. in press.
4. Kuráž V., Kutílek M., Kašpar I., Soil Science110 (1970), 278.
5. Raytburd C. M., Slonimskaya M. B.,in the compilation Svyazanaya voda v dispersnych sistemach (Bonded water in dispersed systems), Moscow University Publ. House, Moscow 1970, 78.