1. Linear programming in complex space;Levinson;J. Math. Anal. Appl.,1966
2. On vectorial programming problem in complex space;Duca;Stud. Univ. Babes-Bolya, Math.,1979
3. Proper efficiency in the complex vectorial programing;Duca;Stud. Univ. Babes-Bolya, Math.,1980
4. Efficiency criteria in vectorial programming in complex space without convexity;Duca;Cah. Centre Etudes Rech. Oper.,1984
5. Programming with linear fractional functionals in complex space;Swamp;Cah. Centre Etudes Rech. Oper.,1970