| article html file updated | 7 February 2020 05:24 CET | Update | https://www.mdpi.com/2227-9032/4/1/17 |
| article html file updated | 21 September 2019 12:29 CEST | Update | - |
| article html file updated | 5 May 2019 22:31 CEST | Update | - |
| article html file updated | 26 March 2019 22:29 CET | Update | - |
| article html file updated | 18 May 2016 12:21 CEST | Original file | - |
| article pdf uploaded. | 3 March 2016 11:03 CET | Version of Record | https://www.mdpi.com/2227-9032/4/1/17/pdf |
| article xml uploaded. | 3 March 2016 11:03 CET | Original file | https://www.mdpi.com/2227-9032/4/1/17/xml |
