TY  - JOUR
PY  - 1973
DA  - 1973//
TI  - Periodica polytechnica: contributions to international technical sciences
T2  - Period.polytech.Transportat.Engng
PB  - Univ.
CY  - Budapest
SN  - 0303-7800
LA  - Undetermined language
N1  - publ. by the Technical University, Budapest
ID  - 12939162X
ER  -