| article html file updated | 8 February 2020 00:44 CET | Update | https://www.mdpi.com/1424-8220/17/3/503 |
| article html file updated | 23 September 2019 15:35 CEST | Update | - |
| article html file updated | 4 May 2019 08:20 CEST | Update | - |
| article html file updated | 31 March 2017 09:59 CEST | Update | - |
| article html file updated | 7 March 2017 08:55 CET | Original file | - |
| article xml uploaded. | 7 March 2017 08:54 CET | Update | https://www.mdpi.com/1424-8220/17/3/503/xml |
| article pdf uploaded. | 7 March 2017 08:53 CET | Updated version of record | https://www.mdpi.com/1424-8220/17/3/503/pdf |
| article pdf uploaded. | 3 March 2017 14:12 CET | Version of Record | https://www.mdpi.com/1424-8220/17/3/503/pdf-vor |
