| article html file updated | 8 February 2020 02:37 CET | Update | https://www.mdpi.com/1424-8220/17/4/740 |
| article html file updated | 24 September 2019 02:24 CEST | Update | - |
| article html file updated | 4 May 2019 04:13 CEST | Update | - |
| article html file updated | 29 April 2017 13:45 CEST | Update | - |
| article html file updated | 1 April 2017 07:57 CEST | Original file | - |
| article xml uploaded. | 1 April 2017 07:56 CEST | Original file | https://www.mdpi.com/1424-8220/17/4/740/xml |
| article pdf uploaded. | 1 April 2017 07:56 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/740/pdf |
| article pdf uploaded. | 31 March 2017 11:59 CEST | Version of Record | https://www.mdpi.com/1424-8220/17/4/740/pdf-vor |
