| article html file updated | 18 August 2026 00:01 CEST | Update | https://www.mdpi.com/2218-1997/6/9/139 |
| article html file updated | 1 September 2025 07:05 CEST | Update | N/A |
| article html file updated | 22 July 2022 05:22 CEST | Update | N/A |
| article html file updated | 7 October 2020 11:43 CEST | Update | N/A |
| article html file updated | 31 August 2020 09:53 CEST | Original file | N/A |
| article pdf uploaded. | 31 August 2020 09:51 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/9/139/pdf |
| article xml uploaded. | 31 August 2020 09:51 CEST | Update | https://www.mdpi.com/2218-1997/6/9/139/xml |
| article xml file uploaded | 31 August 2020 09:51 CEST | Original file | N/A |
