| article html file updated | 9 February 2020 05:45 CET | Update | https://www.mdpi.com/2414-4088/2/1/6 |
| article html file updated | 1 May 2019 20:27 CEST | Update | N/A |
| article html file updated | 17 April 2019 19:29 CEST | Update | N/A |
| article html file updated | 28 March 2019 21:24 CET | Update | N/A |
| article html file updated | 17 July 2018 04:08 CEST | Update | N/A |
| article xml uploaded. | 17 July 2018 04:06 CEST | Update | https://www.mdpi.com/2414-4088/2/1/6/xml |
| article pdf uploaded. | 17 July 2018 04:06 CEST | Updated version of record | https://www.mdpi.com/2414-4088/2/1/6/pdf |
| article html file updated | 6 February 2018 19:12 CET | Original file | N/A |
| article xml uploaded. | 6 February 2018 19:11 CET | Original file | N/A |
| article pdf uploaded. | 6 February 2018 19:11 CET | Version of Record | https://www.mdpi.com/2414-4088/2/1/6/pdf-vor |
