| article html file updated | 8 February 2020 02:08 CET | Update | https://www.mdpi.com/1424-8220/17/4/667 |
| article html file updated | 23 September 2019 23:40 CEST | Update | - |
| article html file updated | 4 May 2019 05:17 CEST | Update | - |
| article html file updated | 29 April 2017 13:27 CEST | Update | - |
| article html file updated | 27 March 2017 05:29 CEST | Update | - |
| article html file updated | 24 March 2017 22:28 CET | Update | - |
| article html file updated | 24 March 2017 12:41 CET | Original file | - |
| article xml uploaded. | 24 March 2017 12:40 CET | Update | https://www.mdpi.com/1424-8220/17/4/667/xml |
| article pdf uploaded. | 24 March 2017 12:40 CET | Updated version of record | https://www.mdpi.com/1424-8220/17/4/667/pdf |
| article pdf uploaded. | 23 March 2017 12:54 CET | Version of Record | https://www.mdpi.com/1424-8220/17/4/667/pdf-vor |