| article html file updated | 7 February 2020 21:40 CET | Update | https://www.mdpi.com/2227-7099/5/1/3 |
| article html file updated | 22 September 2019 22:33 CEST | Update | - |
| article html file updated | 4 May 2019 14:44 CEST | Update | - |
| article html file updated | 30 March 2017 03:37 CEST | Update | - |
| article html file updated | 18 January 2017 08:28 CET | Original file | - |
| article xml uploaded. | 18 January 2017 08:27 CET | Update | https://www.mdpi.com/2227-7099/5/1/3/xml |
| article xml uploaded. | 18 January 2017 08:27 CET | Original file | - |
| article pdf uploaded. | 18 January 2017 08:27 CET | Version of Record | https://www.mdpi.com/2227-7099/5/1/3/pdf |
