| article html file updated | 7 February 2020 07:07 CET | Update | https://www.mdpi.com/2225-1154/4/2/22 |
| article html file updated | 5 May 2019 18:55 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:36 CET | Update | N/A |
| article html file updated | 1 July 2016 10:41 CEST | Update | N/A |
| article html file updated | 12 April 2016 09:10 CEST | Original file | N/A |
| article xml uploaded. | 12 April 2016 09:09 CEST | Original file | https://www.mdpi.com/2225-1154/4/2/22/xml |
| article pdf uploaded. | 12 April 2016 09:09 CEST | Version of Record | https://www.mdpi.com/2225-1154/4/2/22/pdf |
