| article html file updated | 7 February 2020 10:34 CET | Update | https://www.mdpi.com/2411-5134/1/2/13 |
| article html file updated | 5 May 2019 12:11 CEST | Update | N/A |
| article html file updated | 27 March 2019 08:11 CET | Update | N/A |
| article html file updated | 22 June 2016 14:27 CEST | Original file | N/A |
| article xml uploaded. | 22 June 2016 14:26 CEST | Original file | https://www.mdpi.com/2411-5134/1/2/13/xml |
| article pdf uploaded. | 22 June 2016 14:26 CEST | Version of Record | https://www.mdpi.com/2411-5134/1/2/13/pdf |
