Gang ChenWen HeLawrence C. LeungTian LanYingying HanAssigning licenced technicians to maintenance tasks at aircraft maintenance base: a bi-objective approach and a Chinese airline application.5550-5563201755Int. J. Prod. Res.19https://doi.org/10.1080/00207543.2017.1296204db/journals/ijpr/ijpr55.html#ChenHLLH17