@article {2180,
	title = {Preface},
	journal = {Theoretical Computer Science},
	volume = {724},
	year = {2018},
	month = {05/2017},
	pages = {1-2},
	publisher = {Elsevier},
	doi = {10.1016/j.tcs.2017.12.017},
	url = {https://doi.org/10.1016/j.tcs.2017.12.017},
	author = {Miguel A. Mart{\'\i}nez-del-Amor and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Luis Valencia-Cabrera}
}
