| article html file updated | 7 February 2020 11:13 CET | Update | https://www.mdpi.com/2227-9091/4/3/22 |
| article html file updated | 5 May 2019 11:01 CEST | Update | - |
| article html file updated | 27 March 2019 09:23 CET | Update | - |
| article html file updated | 29 September 2016 09:44 CEST | Update | - |
| article html file updated | 5 July 2016 08:30 CEST | Original file | - |
| article xml uploaded. | 5 July 2016 08:29 CEST | Original file | https://www.mdpi.com/2227-9091/4/3/22/xml |
| article pdf uploaded. | 5 July 2016 08:29 CEST | Version of Record | https://www.mdpi.com/2227-9091/4/3/22/pdf |
