| article html file updated | 7 February 2020 07:39 CET | Update | https://www.mdpi.com/2227-7080/4/2/14 |
| article html file updated | 5 May 2019 17:51 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:41 CET | Update | N/A |
| article html file updated | 22 April 2016 09:33 CEST | Original file | N/A |
| article xml uploaded. | 22 April 2016 09:31 CEST | Original file | https://www.mdpi.com/2227-7080/4/2/14/xml |
| article pdf uploaded. | 22 April 2016 09:31 CEST | Version of Record | https://www.mdpi.com/2227-7080/4/2/14/pdf |
