//-->
Efficiency of investment in a socialist economy
Rakowski, Mieczysław F., (1966)
An algorithm for solving some problems connected with the optimum use of the investment fund in an industrial branch
Altăr, M., (1966)
Njakoi metodologičeski vüprosi otnosno meždunarodnoto sravnjavane efektivnosta na kapitalnite vloženija v socialističeskiteé internationale de l'effectivité des investissements des capitaux dans les pays socialistes
Angelov, Todor, (1962)