| article html file updated | 7 February 2020 06:38 CET | Update | https://www.mdpi.com/2226-4787/4/2/17 |
| article html file updated | 5 May 2019 19:57 CEST | Update | N/A |
| article html file updated | 27 March 2019 00:42 CET | Update | N/A |
| article html file updated | 1 July 2016 12:16 CEST | Update | N/A |
| article html file updated | 30 March 2016 13:50 CEST | Original file | N/A |
| article xml uploaded. | 30 March 2016 13:49 CEST | Update | https://www.mdpi.com/2226-4787/4/2/17/xml |
| article pdf uploaded. | 30 March 2016 13:49 CEST | Version of Record | https://www.mdpi.com/2226-4787/4/2/17/pdf |
