| article html file updated | 30 August 2025 03:28 CEST | Update | https://www.mdpi.com/2076-3271/6/2/31 |
| article html file updated | 21 August 2025 19:57 CEST | Update | - |
| article html file updated | 16 July 2022 10:43 CEST | Update | - |
| article html file updated | 9 February 2020 13:43 CET | Update | - |
| article html file updated | 2 October 2019 14:22 CEST | Update | - |
| article html file updated | 1 May 2019 03:41 CEST | Update | - |
| article html file updated | 17 April 2019 04:04 CEST | Update | - |
| article html file updated | 29 March 2019 15:27 CET | Update | - |
| article html file updated | 17 April 2018 10:51 CEST | Original file | - |
| article pdf uploaded. | 17 April 2018 10:50 CEST | Updated version of record | https://www.mdpi.com/2076-3271/6/2/31/pdf |
| article xml uploaded. | 17 April 2018 10:50 CEST | Update | https://www.mdpi.com/2076-3271/6/2/31/xml |
| article xml file uploaded | 17 April 2018 10:50 CEST | Original file | - |
