| article html file updated | 29 August 2025 20:15 CEST | Update | https://www.mdpi.com/1999-5903/2/4/559 |
| article html file updated | 15 July 2022 21:37 CEST | Update | - |
| article html file updated | 5 February 2020 15:44 CET | Update | - |
| article html file updated | 9 May 2019 03:53 CEST | Update | - |
| article html file updated | 20 March 2019 03:42 CET | Update | - |
| article html file updated | 20 July 2017 11:06 CEST | Update | - |
| article html file updated | 20 July 2017 11:05 CEST | Update | - |
| article html file updated | 20 July 2017 11:04 CEST | Original file | - |
| article xml uploaded. | 20 July 2017 11:02 CEST | Original file | https://www.mdpi.com/1999-5903/2/4/559/xml |
