@article{bibcite_611,
  author = {John Mulvey and Stavros Zenios},
  title = {Real-time operational planning for the US air traffic system},
  year = {1987},
  journal = {Applied numerical mathematics},
  volume = {3},
  number = {5},
  pages = {427{\textendash}441},
  publisher = {Elsevier},
}