@article{Dridi14,
  author 	= {Olfa Dridi and Saoussen Krichen and Adel Guitouni},
  title 	= {{A multiobjective hybrid ant colony optimization approach applied to the assignment and scheduling problem}},
  journal 	= {International Transactions in Operational Research}, 
  volume 	= {21},
  number 	= {6},
  pages 	= {935--953},
  month 	= {November},
  year 		= {2014}
}