FROSTOVÁ, Jana. A study on teachers´ voice development in the context of their profession. In ŘEHULKA, E. Et Al. School And Health 21(3/2008): Social And Health Aspects of Health Education. 1st ed. Brno: MSD, s.r.o., 2008, p. 65-78. School And Health 21(3/2008). ISBN 978-80-7392-043-2.