| article html file updated | 7 February 2020 05:47 CET | Update | https://www.mdpi.com/2227-9032/4/1/19 |
| article html file updated | 21 September 2019 13:00 CEST | Update | - |
| article html file updated | 5 May 2019 21:42 CEST | Update | - |
| article html file updated | 26 March 2019 23:16 CET | Update | - |
| article html file updated | 18 May 2016 12:22 CEST | Original file | - |
| article pdf uploaded. | 11 March 2016 11:59 CET | Version of Record | https://www.mdpi.com/2227-9032/4/1/19/pdf |
| article xml uploaded. | 11 March 2016 11:59 CET | Original file | https://www.mdpi.com/2227-9032/4/1/19/xml |
