| article html file updated | 6 February 2020 01:29 CET | Update | https://www.mdpi.com/2072-6694/5/2/404 |
| article html file updated | 8 May 2019 06:21 CEST | Update | - |
| article html file updated | 20 March 2019 20:55 CET | Update | - |
| article html file updated | 17 June 2015 08:21 CEST | Update | - |
| article html file updated | 6 August 2013 15:31 CEST | Original file | - |
| article xml file uploaded | 6 August 2013 15:31 CEST | Original file | https://www.mdpi.com/2072-6694/5/2/404/xml |
| article pdf uploaded. | 3 May 2013 15:24 CEST | Updated version of record | https://www.mdpi.com/2072-6694/5/2/404/pdf |
| article pdf uploaded. | 11 April 2013 13:49 CEST | Version of Record | https://www.mdpi.com/2072-6694/5/2/404/pdf-vor |
