| article html file updated | 1 September 2025 08:04 CEST | Update | https://www.mdpi.com/2218-1997/6/9/150 |
| article html file updated | 22 July 2022 06:35 CEST | Update | N/A |
| article html file updated | 10 September 2020 13:53 CEST | Original file | N/A |
| article pdf uploaded. | 10 September 2020 13:51 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/9/150/pdf |
| article xml uploaded. | 10 September 2020 13:51 CEST | Update | https://www.mdpi.com/2218-1997/6/9/150/xml |
| article xml file uploaded | 10 September 2020 13:51 CEST | Original file | N/A |
| article pdf uploaded. | 9 September 2020 15:22 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/9/150/pdf-vor |
| article pdf uploaded. | 9 September 2020 15:22 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/9/150/pdf-vor |
