@article {2456,
	title = {Cell-like P systems with evolutional symport/antiport rules and membrane creation},
	journal = {Information and Computation},
	volume = {104542},
	year = {2020},
	doi = {10.1016/j.ic.2020.104542},
	author = {B. Song and K. Li and David Orellana-Mart{\'\i}n and Luis Valencia-Cabrera and Mario J. P{\'e}rez-Jim{\'e}nez}
}
@article {9138697,
	title = {Monodirectional Tissue P Systems With Promoters},
	journal = {IEEE Transactions on Cybernetics},
	volume = {In press},
	year = {2020},
	pages = {1-13},
	doi = {10.1109/TCYB.2020.3003060},
	author = {B. Song and X. Zeng and M. Jiang and Mario J. P{\'e}rez-Jim{\'e}nez}
}
