| article html file updated | 30 August 2025 02:31 CEST | Update | https://www.mdpi.com/2218-1997/4/2/26 |
| article html file updated | 21 August 2025 19:31 CEST | Update | - |
| article html file updated | 16 July 2022 09:04 CEST | Update | - |
| article html file updated | 9 February 2020 05:40 CET | Update | - |
| article html file updated | 30 September 2019 13:33 CEST | Update | - |
| article html file updated | 1 May 2019 20:38 CEST | Update | - |
| article html file updated | 17 April 2019 19:39 CEST | Update | - |
| article html file updated | 28 March 2019 21:13 CET | Update | - |
| article html file updated | 14 March 2018 09:44 CET | Update | - |
| article html file updated | 26 February 2018 10:17 CET | Update | - |
| article xml uploaded. | 26 February 2018 10:16 CET | Update | https://www.mdpi.com/2218-1997/4/2/26/xml |
| article pdf uploaded. | 26 February 2018 10:16 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/2/26/pdf |
| article html file updated | 6 February 2018 12:25 CET | Original file | - |
| article xml uploaded. | 6 February 2018 12:24 CET | Original file | - |
| article pdf uploaded. | 6 February 2018 12:24 CET | Version of Record | https://www.mdpi.com/2218-1997/4/2/26/pdf-vor |
