Article
Úlohy a problémy.
(Czech) [Problems and Excercises].
Časopis pro pěstování matematiky,
vol. 97
(1972),
issue 3,
pp. 334
References:
[1] C. Constantinescu: Harmonie spaces and their connections with the semi-elliptic differential equations and with the Markov processes. Elliptische Differentialgleichungen (Symposium), Akademie-Verlag, Berlin 1969.