| article html file updated | 8 February 2020 07:01 CET | Update | https://www.mdpi.com/1424-8220/17/6/1239 |
| article html file updated | 25 September 2019 01:56 CEST | Update | - |
| article html file updated | 3 May 2019 19:50 CEST | Update | - |
| article html file updated | 30 June 2017 11:33 CEST | Update | - |
| article html file updated | 22 June 2017 04:33 CEST | Original file | - |
| article xml uploaded. | 22 June 2017 04:32 CEST | Update | https://www.mdpi.com/1424-8220/17/6/1239/xml |
| article pdf uploaded. | 22 June 2017 04:32 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/6/1239/pdf |
| article pdf uploaded. | 30 May 2017 12:01 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/6/1239/pdf-vor |
