@article {2188, title = {When object production tunes the efficiency of membrane systems}, journal = {Theoretical Computer Science}, volume = {805}, year = {2020}, pages = {218-231}, doi = {https://doi.org/10.1016/j.tcs.2018.04.013}, author = {David Orellana-Mart{\'\i}n and Miguel A. Mart{\'\i}nez-del-Amor and Ignacio P{\'e}rez-Hurtado and Agust{\'\i}n Riscos-N{\'u}{\~n}ez and Luis Valencia-Cabrera and Mario J. P{\'e}rez-Jim{\'e}nez} }