| article html file updated | 7 February 2020 09:37 CET | Update | https://www.mdpi.com/2227-7080/4/2/16 |
| article html file updated | 5 May 2019 13:58 CEST | Update | N/A |
| article html file updated | 27 March 2019 06:25 CET | Update | N/A |
| article html file updated | 2 June 2016 09:52 CEST | Original file | N/A |
| article xml uploaded. | 2 June 2016 09:51 CEST | Original file | https://www.mdpi.com/2227-7080/4/2/16/xml |
| article pdf uploaded. | 2 June 2016 09:51 CEST | Version of Record | https://www.mdpi.com/2227-7080/4/2/16/pdf |
