| article html file updated | 6 February 2020 10:29 CET | Update | https://www.mdpi.com/2076-3387/4/3/192 |
| article html file updated | 21 March 2019 20:16 CET | Original file | - |
| article pdf uploaded. | 7 July 2014 10:03 CEST | Updated version of record | https://www.mdpi.com/2076-3387/4/3/192/pdf |
| article pdf uploaded. | 4 July 2014 14:41 CEST | Version of Record | https://www.mdpi.com/2076-3387/4/3/192/pdf-vor |
