| article html file updated | 30 August 2025 04:19 CEST | Update | https://www.mdpi.com/2218-1997/4/6/70 |
| article html file updated | 16 July 2022 21:09 CEST | Update | - |
| article html file updated | 9 February 2020 20:22 CET | Update | - |
| article html file updated | 4 October 2019 07:22 CEST | Update | - |
| article html file updated | 30 April 2019 13:35 CEST | Update | - |
| article html file updated | 16 April 2019 14:12 CEST | Update | - |
| article html file updated | 16 April 2019 08:35 CEST | Update | - |
| article html file updated | 30 March 2019 07:52 CET | Update | - |
| article html file updated | 26 June 2018 05:17 CEST | Update | - |
| article html file updated | 5 June 2018 13:40 CEST | Original file | - |
| article pdf uploaded. | 5 June 2018 13:39 CEST | Version of Record | https://www.mdpi.com/2218-1997/4/6/70/pdf |
| article xml uploaded. | 5 June 2018 13:39 CEST | Update | https://www.mdpi.com/2218-1997/4/6/70/xml |
| article xml file uploaded | 5 June 2018 13:39 CEST | Original file | - |
