| article html file updated | 6 February 2020 01:45 CET | Update | https://www.mdpi.com/2073-4433/4/2/94 |
| article html file updated | 8 May 2019 05:50 CEST | Update | - |
| article html file updated | 20 March 2019 21:38 CET | Update | - |
| article html file updated | 17 June 2015 08:48 CEST | Original file | - |
| article pdf uploaded. | 26 April 2013 16:43 CEST | Updated version of record | https://www.mdpi.com/2073-4433/4/2/94/pdf |
| article pdf uploaded. | 25 April 2013 14:06 CEST | Version of Record | https://www.mdpi.com/2073-4433/4/2/94/pdf-vor |
