| article html file updated | 7 February 2020 04:27 CET | Update | https://www.mdpi.com/2224-2708/5/1/3 |
| article html file updated | 6 May 2019 00:35 CEST | Update | - |
| article html file updated | 26 March 2019 20:31 CET | Update | - |
| article html file updated | 7 July 2016 03:13 CEST | Original file | - |
| article pdf uploaded. | 6 February 2016 12:19 CET | Version of Record | https://www.mdpi.com/2224-2708/5/1/3/pdf |
| article xml uploaded. | 6 February 2016 12:19 CET | Original file | https://www.mdpi.com/2224-2708/5/1/3/xml |
