| article html file updated | 29 August 2025 22:11 CEST | Update | https://www.mdpi.com/2218-1997/1/3/307 |
| article html file updated | 20 August 2025 22:02 CEST | Update | - |
| article html file updated | 16 July 2022 01:00 CEST | Update | - |
| article html file updated | 6 February 2020 23:26 CET | Update | - |
| article html file updated | 6 May 2019 10:01 CEST | Update | - |
| article html file updated | 26 March 2019 11:57 CET | Update | - |
| article html file updated | 11 November 2015 11:18 CET | Original file | - |
| article xml file uploaded | 11 November 2015 11:18 CET | Original file | https://www.mdpi.com/2218-1997/1/3/307/xml |
| article pdf uploaded. | 1 October 2015 08:57 CEST | Version of Record | https://www.mdpi.com/2218-1997/1/3/307/pdf |
