| article html file updated | 8 February 2020 18:34 CET | Update | https://www.mdpi.com/2411-5142/2/4/38 |
| article html file updated | 27 September 2019 19:06 CEST | Update | N/A |
| article html file updated | 2 May 2019 21:02 CEST | Update | N/A |
| article html file updated | 16 October 2017 15:57 CEST | Original file | N/A |
| article xml uploaded. | 16 October 2017 15:56 CEST | Original file | https://www.mdpi.com/2411-5142/2/4/38/xml |
| article pdf uploaded. | 16 October 2017 15:56 CEST | Version of Record | https://www.mdpi.com/2411-5142/2/4/38/pdf |
