%0 Journal Article %A Lee, H. W. J. %A Cai, X. Q. %A Teo, K. L. %T An optimal control approach to manpower planning problem. %J Mathematical Problems in Engineering %D 2001 %P 155 %V 7 %N 2 %I mathdoc %U https://geodesic-test.mathdoc.fr/articles/10.1155/S1024123X01001594/ %R 10.1155/S1024123X01001594 %G en %F 10_1155_S1024123X01001594