F. MENDE, F.. Development and Increase in the Reliability of the Small Storage Batteries, Utilized for the Nourishment of the Mobile Radio-Technical Devices. Global Journal of Research In Engineering, [S.l.], aug. 2020. ISSN 2249-4596. Available at: <https://engineeringresearch.org/index.php/GJRE/article/view/2049>. Date accessed: 22 oct. 2020.