| article html file updated | 9 February 2020 07:12 CET | Update | https://www.mdpi.com/1424-8220/18/2/639 |
| article html file updated | 30 September 2019 22:36 CEST | Update | N/A |
| article html file updated | 1 May 2019 17:15 CEST | Update | N/A |
| article html file updated | 17 April 2019 16:37 CEST | Update | N/A |
| article html file updated | 29 March 2019 00:30 CET | Update | N/A |
| article html file updated | 14 March 2018 20:05 CET | Update | N/A |
| article html file updated | 24 February 2018 04:16 CET | Original file | N/A |
| article xml uploaded. | 24 February 2018 04:15 CET | Original file | https://www.mdpi.com/1424-8220/18/2/639/xml |
| article pdf uploaded. | 24 February 2018 04:15 CET | Updated version of record | https://www.mdpi.com/1424-8220/18/2/639/pdf |
| article pdf uploaded. | 21 February 2018 17:25 CET | Version of Record | https://www.mdpi.com/1424-8220/18/2/639/pdf-vor |
