| article html file updated | 29 August 2025 23:12 CEST | Update | https://www.mdpi.com/2079-6439/4/2/20 |
| article html file updated | 16 July 2022 02:35 CEST | Update | - |
| article html file updated | 7 February 2020 09:51 CET | Update | - |
| article html file updated | 5 May 2019 13:33 CEST | Update | - |
| article html file updated | 27 March 2019 06:53 CET | Update | - |
| article html file updated | 1 July 2016 12:05 CEST | Update | - |
| article html file updated | 7 June 2016 15:40 CEST | Original file | - |
| article xml uploaded. | 7 June 2016 15:38 CEST | Update | https://www.mdpi.com/2079-6439/4/2/20/xml |
| article pdf uploaded. | 7 June 2016 15:38 CEST | Version of Record | https://www.mdpi.com/2079-6439/4/2/20/pdf |
