| article html file updated | 6 February 2020 13:16 CET | Update | https://www.mdpi.com/2075-1680/3/4/342 |
| article html file updated | 7 May 2019 06:16 CEST | Update | - |
| article html file updated | 25 March 2019 16:51 CET | Original file | - |
| article pdf uploaded. | 31 October 2014 14:46 CET | Updated version of record | https://www.mdpi.com/2075-1680/3/4/342/pdf |
| article pdf uploaded. | 30 October 2014 12:29 CET | Version of Record | https://www.mdpi.com/2075-1680/3/4/342/pdf-vor |
