| article html file updated | 7 February 2020 07:05 CET | Update | https://www.mdpi.com/1424-8220/16/4/518 |
| article html file updated | 5 May 2019 19:01 CEST | Update | - |
| article html file updated | 27 March 2019 01:31 CET | Update | - |
| article html file updated | 29 April 2016 04:54 CEST | Update | - |
| article html file updated | 11 April 2016 07:58 CEST | Original file | - |
| article xml uploaded. | 11 April 2016 07:56 CEST | Original file | https://www.mdpi.com/1424-8220/16/4/518/xml |
| article pdf uploaded. | 11 April 2016 07:56 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/4/518/pdf |
