Kanjana Thongsanit และ Rein Boondiskulchok. (2009) Assignment of cross-trained workers with learning effect. Chulalongkorn University:ม.ป.ท.Kanjana Thongsanit และ Rein Boondiskulchok. 2009. Assignment of cross-trained workers with learning effect. ม.ป.ท.:Chulalongkorn University;Kanjana Thongsanit และ Rein Boondiskulchok. Assignment of cross-trained workers with learning effect. ม.ป.ท.:Chulalongkorn University, 2009. Print.