- Author: A. Hollinger
- Language: Romanian
- Year: 1965
- Author: A. Hollinger
- Language: Romanian
- Year: 1978
- Author: A. Hollinger
- Language: Romanian
- Year: 1982
- Author: Prof. dr. doc. Romulus Cristescu
- Language: Romanian
- Year: 1983
- Author: Gh. D. Simionescu
- Language: Romanian
- Year: 1967
- Author: Dorin Gheorghiu SIlvia Gheorghiu
- Language: Romanian
- Year: 1975
- Author: Romulus Sfichi
- Language: Romanian
- Year: 1979
- Author: Prof. univ. C. Ionescu-Bujor Conf. univ. O. Sacter
- Language: Romanian
- Year: 1963
- Author: Dan Barbilian
- Language: Romanian
- Year: 1988
- Author: Eugen Rusu
- Language: Romanian
- Year: 1978