| article html file updated | 12 February 2020 02:28 CET | Update | https://www.mdpi.com/1660-3397/17/4/206 |
| article html file updated | 8 May 2019 15:07 CEST | Update | N/A |
| article html file updated | 25 April 2019 17:57 CEST | Update | N/A |
| article html file updated | 18 April 2019 19:06 CEST | Original file | N/A |
| article pdf uploaded. | 18 April 2019 11:57 CEST | Updated version of record | https://www.mdpi.com/1660-3397/17/4/206/pdf |
| article xml uploaded. | 18 April 2019 11:57 CEST | Update | https://www.mdpi.com/1660-3397/17/4/206/xml |
| article xml file uploaded | 18 April 2019 11:57 CEST | Update | N/A |
| article pdf uploaded. | 2 April 2019 13:02 CEST | Version of Record | https://www.mdpi.com/1660-3397/17/4/206/pdf-vor |
| article xml file uploaded | 2 April 2019 13:02 CEST | Original file | N/A |
