| article html file updated | 7 February 2020 20:32 CET | Update | https://www.mdpi.com/1424-8220/17/1/61 |
| article html file updated | 22 September 2019 16:29 CEST | Update | - |
| article html file updated | 4 May 2019 17:20 CEST | Update | - |
| article html file updated | 8 February 2017 09:15 CET | Update | - |
| article html file updated | 30 December 2016 07:07 CET | Original file | - |
| article xml uploaded. | 30 December 2016 07:06 CET | Update | https://www.mdpi.com/1424-8220/17/1/61/xml |
| article xml uploaded. | 30 December 2016 07:06 CET | Original file | - |
| article pdf uploaded. | 30 December 2016 07:06 CET | Version of Record | https://www.mdpi.com/1424-8220/17/1/61/pdf |
