| article html file updated | 31 August 2025 13:29 CEST | Update | https://www.mdpi.com/2218-1997/6/3/39 |
| article html file updated | 20 July 2022 21:58 CEST | Update | N/A |
| article html file updated | 8 October 2020 17:50 CEST | Update | N/A |
| article html file updated | 1 April 2020 23:33 CEST | Update | N/A |
| article html file updated | 25 March 2020 16:56 CET | Original file | N/A |
| article pdf uploaded. | 25 March 2020 16:54 CET | Updated version of record | https://www.mdpi.com/2218-1997/6/3/39/pdf |
| article xml uploaded. | 25 March 2020 16:54 CET | Update | https://www.mdpi.com/2218-1997/6/3/39/xml |
| article xml file uploaded | 25 March 2020 16:54 CET | Update | N/A |
| article pdf uploaded. | 4 March 2020 14:27 CET | Version of Record | https://www.mdpi.com/2218-1997/6/3/39/pdf-vor |
| article xml file uploaded | 4 March 2020 14:27 CET | Original file | N/A |
