| article html file updated | 29 August 2025 23:20 CEST | Update | https://www.mdpi.com/1999-5903/8/3/31 |
| article html file updated | 16 July 2022 02:48 CEST | Update | - |
| article html file updated | 7 February 2020 11:24 CET | Update | - |
| article html file updated | 5 May 2019 10:41 CEST | Update | - |
| article html file updated | 27 March 2019 09:44 CET | Update | - |
| article html file updated | 8 July 2016 14:48 CEST | Original file | - |
| article xml uploaded. | 8 July 2016 14:47 CEST | Original file | https://www.mdpi.com/1999-5903/8/3/31/xml |
| article pdf uploaded. | 8 July 2016 14:47 CEST | Version of Record | https://www.mdpi.com/1999-5903/8/3/31/pdf |
