| article html file updated | 9 February 2020 01:08 CET | Update | https://www.mdpi.com/1424-8220/18/1/37 |
| article html file updated | 29 September 2019 11:21 CEST | Update | - |
| article html file updated | 2 May 2019 06:16 CEST | Update | - |
| article html file updated | 18 April 2019 04:14 CEST | Update | - |
| article html file updated | 28 March 2019 11:00 CET | Update | - |
| article html file updated | 2 February 2018 10:21 CET | Update | - |
| article html file updated | 25 December 2017 10:03 CET | Original file | - |
| article xml uploaded. | 25 December 2017 10:02 CET | Update | https://www.mdpi.com/1424-8220/18/1/37/xml |
| article xml uploaded. | 25 December 2017 10:02 CET | Original file | - |
| article pdf uploaded. | 25 December 2017 10:02 CET | Version of Record | https://www.mdpi.com/1424-8220/18/1/37/pdf |
