| article html file updated | 6 February 2020 04:42 CET | Update | https://www.mdpi.com/2218-273X/3/4/741 |
| article html file updated | 7 May 2019 23:44 CEST | Update | - |
| article html file updated | 21 March 2019 05:25 CET | Update | - |
| article html file updated | 14 March 2018 17:52 CET | Update | - |
| article html file updated | 17 June 2015 13:38 CEST | Update | - |
| article html file updated | 28 April 2014 10:35 CEST | Original file | - |
| article xml file uploaded | 28 April 2014 10:35 CEST | Original file | https://www.mdpi.com/2218-273X/3/4/741/xml |
| article pdf uploaded. | 8 October 2013 14:45 CEST | Updated version of record | https://www.mdpi.com/2218-273X/3/4/741/pdf |
| article pdf uploaded. | 2 October 2013 17:48 CEST | Updated version of record | https://www.mdpi.com/2218-273X/3/4/741/pdf-vor |
| article pdf uploaded. | 2 October 2013 17:44 CEST | Version of Record | https://www.mdpi.com/2218-273X/3/4/741/pdf-vor |
