| article html file updated | 7 February 2020 21:20 CET | Update | https://www.mdpi.com/1424-8220/17/1/138 |
| article html file updated | 22 September 2019 20:37 CEST | Update | - |
| article html file updated | 4 May 2019 15:36 CEST | Update | - |
| article html file updated | 8 February 2017 09:51 CET | Update | - |
| article html file updated | 12 January 2017 11:01 CET | Original file | - |
| article xml uploaded. | 12 January 2017 11:00 CET | Original file | https://www.mdpi.com/1424-8220/17/1/138/xml |
| article pdf uploaded. | 12 January 2017 11:00 CET | Version of Record | https://www.mdpi.com/1424-8220/17/1/138/pdf |
