| article html file updated | 9 February 2020 01:11 CET | Update | https://www.mdpi.com/1424-8220/18/1/42 |
| article html file updated | 29 September 2019 11:37 CEST | Update | N/A |
| article html file updated | 2 May 2019 06:09 CEST | Update | N/A |
| article html file updated | 18 April 2019 04:08 CEST | Update | N/A |
| article html file updated | 28 March 2019 11:08 CET | Update | N/A |
| article html file updated | 2 February 2018 10:22 CET | Update | N/A |
| article html file updated | 25 December 2017 13:16 CET | Original file | N/A |
| article xml uploaded. | 25 December 2017 13:14 CET | Original file | https://www.mdpi.com/1424-8220/18/1/42/xml |
| article pdf uploaded. | 25 December 2017 13:14 CET | Version of Record | https://www.mdpi.com/1424-8220/18/1/42/pdf |
