| article html file updated | 7 February 2020 00:17 CET | Update | https://www.mdpi.com/2227-7390/3/4/1001 |
| article html file updated | 6 May 2019 08:19 CEST | Update | - |
| article html file updated | 26 March 2019 13:30 CET | Original file | - |
| article pdf uploaded. | 4 November 2015 10:13 CET | Updated version of record | https://www.mdpi.com/2227-7390/3/4/1001/pdf |
| article pdf uploaded. | 27 October 2015 15:41 CET | Version of Record | https://www.mdpi.com/2227-7390/3/4/1001/pdf-vor |
