@article {Cerdeira_2019,
	title = {The train frequency compatibility problem},
	journal = {Discrete Applied Mathematics},
	volume = {269},
	year = {2019},
	note = {n/a},
	month = {sep},
	pages = {18{\textendash}26},
	publisher = {Elsevier {BV}},
	abstract = {n/a},
	doi = {10.1016/j.dam.2018.10.046},
	url = {https://doi.org/10.1016\%2Fj.dam.2018.10.046},
	author = {Jorge Orestes Cerdeira and Carlos Igl{\'e}sias and Pedro C. Silva}
}
