| article html file updated | 30 August 2025 02:15 CEST | Update | https://www.mdpi.com/2223-7747/7/1/6 |
| article html file updated | 16 July 2022 08:33 CEST | Update | - |
| article html file updated | 9 February 2020 03:06 CET | Update | - |
| article html file updated | 29 September 2019 22:11 CEST | Update | - |
| article html file updated | 2 May 2019 02:10 CEST | Update | - |
| article html file updated | 18 April 2019 00:26 CEST | Update | - |
| article html file updated | 28 March 2019 15:39 CET | Update | - |
| article html file updated | 27 March 2018 14:54 CEST | Update | - |
| article html file updated | 16 January 2018 08:48 CET | Update | - |
| article xml uploaded. | 16 January 2018 08:47 CET | Update | https://www.mdpi.com/2223-7747/7/1/6/xml |
| article pdf uploaded. | 16 January 2018 08:47 CET | Updated version of record | https://www.mdpi.com/2223-7747/7/1/6/pdf |
| article html file updated | 15 January 2018 16:43 CET | Original file | - |
| article xml uploaded. | 15 January 2018 16:42 CET | Original file | - |
| article pdf uploaded. | 15 January 2018 16:42 CET | Version of Record | https://www.mdpi.com/2223-7747/7/1/6/pdf-vor |
