| article html file updated | 9 February 2020 04:52 CET | Update | https://www.mdpi.com/2227-9717/6/2/11 |
| article html file updated | 30 September 2019 08:38 CEST | Update | - |
| article html file updated | 1 May 2019 22:26 CEST | Update | - |
| article html file updated | 17 April 2019 21:08 CEST | Update | - |
| article html file updated | 28 March 2019 19:30 CET | Update | - |
| article html file updated | 14 March 2018 14:50 CET | Update | - |
| article html file updated | 30 January 2018 17:47 CET | Original file | - |
| article xml uploaded. | 30 January 2018 17:46 CET | Update | https://www.mdpi.com/2227-9717/6/2/11/xml |
| article xml uploaded. | 30 January 2018 17:46 CET | Original file | - |
| article pdf uploaded. | 30 January 2018 17:46 CET | Version of Record | https://www.mdpi.com/2227-9717/6/2/11/pdf |
