| article html file updated | 30 August 2025 09:22 CEST | Update | https://www.mdpi.com/2218-1997/4/12/137 |
| article html file updated | 17 July 2022 12:03 CEST | Update | - |
| article html file updated | 11 February 2020 00:09 CET | Update | - |
| article html file updated | 28 April 2019 01:56 CEST | Update | - |
| article html file updated | 13 April 2019 21:55 CEST | Update | - |
| article html file updated | 2 April 2019 04:46 CEST | Update | - |
| article html file updated | 25 December 2018 04:17 CET | Update | - |
| article html file updated | 13 December 2018 06:38 CET | Original file | - |
| article pdf uploaded. | 13 December 2018 06:37 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/12/137/pdf |
| article xml uploaded. | 13 December 2018 06:37 CET | Update | https://www.mdpi.com/2218-1997/4/12/137/xml |
| article xml file uploaded | 13 December 2018 06:37 CET | Update | - |
| article pdf uploaded. | 29 November 2018 16:49 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/12/137/pdf-vor |
| article pdf uploaded. | 29 November 2018 16:36 CET | Version of Record | https://www.mdpi.com/2218-1997/4/12/137/pdf-vor |
| article xml file uploaded | 29 November 2018 16:36 CET | Original file | - |
