| article html file updated | 3 August 2021 13:34 CEST | Update | https://www.mdpi.com/1999-5903/13/4/87 |
| article html file updated | 10 April 2021 08:53 CEST | Update | N/A |
| article html file updated | 30 March 2021 10:06 CEST | Update | N/A |
| article html file updated | 30 March 2021 09:02 CEST | Original file | N/A |
| article pdf uploaded. | 30 March 2021 09:01 CEST | Updated version of record | https://www.mdpi.com/1999-5903/13/4/87/pdf |
| article xml uploaded. | 30 March 2021 09:01 CEST | Update | https://www.mdpi.com/1999-5903/13/4/87/xml |
| article xml file uploaded | 30 March 2021 09:01 CEST | Original file | N/A |
| article pdf uploaded. | 29 March 2021 14:43 CEST | Version of Record | https://www.mdpi.com/1999-5903/13/4/87/pdf-vor |
