| article html file updated | 30 August 2025 02:15 CEST | Update | https://www.mdpi.com/2076-3921/7/1/12 |
| article html file updated | 16 July 2022 08:32 CEST | Update | - |
| article html file updated | 9 February 2020 03:03 CET | Update | - |
| article html file updated | 29 September 2019 22:01 CEST | Update | - |
| article html file updated | 2 May 2019 02:15 CEST | Update | - |
| article html file updated | 18 April 2019 00:30 CEST | Update | - |
| article html file updated | 28 March 2019 15:33 CET | Update | - |
| article html file updated | 1 February 2018 13:56 CET | Update | - |
| article html file updated | 16 January 2018 06:59 CET | Original file | - |
| article xml uploaded. | 16 January 2018 06:58 CET | Original file | https://www.mdpi.com/2076-3921/7/1/12/xml |
| article pdf uploaded. | 16 January 2018 06:58 CET | Version of Record | https://www.mdpi.com/2076-3921/7/1/12/pdf |