| article html file updated | 31 August 2025 17:19 CEST | Update | https://www.mdpi.com/2218-1997/6/4/53 |
| article html file updated | 21 July 2022 01:47 CEST | Update | - |
| article html file updated | 28 April 2020 09:51 CEST | Update | - |
| article pdf uploaded. | 28 April 2020 09:50 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/4/53/pdf |
| article xml uploaded. | 28 April 2020 09:50 CEST | Update | https://www.mdpi.com/2218-1997/6/4/53/xml |
| article xml file uploaded | 28 April 2020 09:50 CEST | Update | - |
| article html file updated | 26 April 2020 04:06 CEST | Original file | - |
| article pdf uploaded. | 26 April 2020 04:04 CEST | Updated version of record | https://www.mdpi.com/2218-1997/6/4/53/pdf-vor |
| article xml file uploaded | 26 April 2020 04:04 CEST | Update | - |
| article pdf uploaded. | 13 April 2020 16:47 CEST | Version of Record | https://www.mdpi.com/2218-1997/6/4/53/pdf-vor |
| article xml file uploaded | 13 April 2020 16:47 CEST | Original file | - |
