| article html file updated | 12 February 2020 11:34 CET | Update | https://www.mdpi.com/2571-905X/2/2/21 |
| article html file updated | 13 June 2019 12:28 CEST | Original file | N/A |
| article pdf uploaded. | 13 June 2019 12:26 CEST | Updated version of record | https://www.mdpi.com/2571-905X/2/2/21/pdf |
| article xml uploaded. | 13 June 2019 12:26 CEST | Update | https://www.mdpi.com/2571-905X/2/2/21/xml |
| article xml file uploaded | 13 June 2019 12:26 CEST | Update | N/A |
| article pdf uploaded. | 10 May 2019 17:22 CEST | Version of Record | https://www.mdpi.com/2571-905X/2/2/21/pdf-vor |
| article xml file uploaded | 10 May 2019 17:22 CEST | Original file | N/A |
