M. Tertisco, P. Stoica & Th. D. Popescu, Modelling and Forecasting of Time Series (in Romanian), Editura Academiei, Bucuresti, 1985, 298 pages.
M. Tertisco, P. Stoica & Th. D. Popescu, Computer-Aided Identification of Systems (in Romanian), Editura Tehnica, Bucuresti, 1987, 388 pages.
S. Calin, Th. D. Popescu, V. Sima & B. Jora, Adaptive and Flexible Control of Industrial Processes (in Romanian), Editura Tehnica, Bucuresti, 1988, 628 pages.
Th. D. Popescu & S. Demetriu, Practice of Time Series Modelling and Forecasting. Box-Jenkins Approach (in Romanian), Editura Tehnica, Bucuresti, 1991, 388 pages.
Th. D. Popescu, Time Series. Applications in System Analysis (in Romanian), Editura Tehnica, Bucuresti, 2000, 567 pages, ISBN 973-31-1404-9, picture.
Theodor D. Popescu; Updated: June 24, 2009