| article html file updated | 9 February 2020 11:31 CET | Update | https://www.mdpi.com/2071-1050/10/4/990 |
| article html file updated | 2 October 2019 00:57 CEST | Update | - |
| article html file updated | 1 May 2019 08:09 CEST | Update | - |
| article html file updated | 17 April 2019 08:05 CEST | Update | - |
| article html file updated | 29 March 2019 10:25 CET | Update | - |
| article html file updated | 2 May 2018 11:09 CEST | Update | - |
| article html file updated | 28 March 2018 08:26 CEST | Original file | - |
| article xml uploaded. | 28 March 2018 08:25 CEST | Original file | https://www.mdpi.com/2071-1050/10/4/990/xml |
| article pdf uploaded. | 28 March 2018 08:25 CEST | Updated version of record | https://www.mdpi.com/2071-1050/10/4/990/pdf |
| article pdf uploaded. | 27 March 2018 17:55 CEST | Version of Record | https://www.mdpi.com/2071-1050/10/4/990/pdf-vor |
