| article html file updated | 8 February 2020 02:19 CET | Update | https://www.mdpi.com/1424-8220/17/4/690 |
| article html file updated | 24 September 2019 00:40 CEST | Update | - |
| article html file updated | 4 May 2019 04:52 CEST | Update | - |
| article html file updated | 29 April 2017 13:32 CEST | Update | - |
| article html file updated | 28 March 2017 09:03 CEST | Original file | - |
| article xml uploaded. | 28 March 2017 08:59 CEST | Update | https://www.mdpi.com/1424-8220/17/4/690/xml |
| article pdf uploaded. | 28 March 2017 08:59 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/690/pdf |
| article pdf uploaded. | 27 March 2017 12:21 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/690/pdf-vor |
