Keprt, Jiří:
Základy teorie interference a koherence v učivu střední školy.
(Czech) [Elementary theory of interference and coherence in the course of secondary schools].Acta Universitatis Palackianae Olomucensis. Facultas Rerum Naturalium. Mathematica-Physica-Chemica,
vol. 12
(1972),
issue 1,
pp. 245-260