| article html file updated | 6 February 2020 09:13 CET | Update | https://www.mdpi.com/1999-4893/7/2/229 |
| article html file updated | 20 September 2019 08:15 CEST | Update | - |
| article html file updated | 21 March 2019 16:58 CET | Update | - |
| article html file updated | 25 April 2017 06:25 CEST | Original file | - |
| article pdf uploaded. | 15 May 2014 14:18 CEST | Updated version of record | https://www.mdpi.com/1999-4893/7/2/229/pdf |
| article pdf uploaded. | 14 May 2014 15:26 CEST | Updated version of record | https://www.mdpi.com/1999-4893/7/2/229/pdf-vor |
| article pdf uploaded. | 13 May 2014 14:56 CEST | Version of Record | https://www.mdpi.com/1999-4893/7/2/229/pdf-vor |
