| article html file updated | 6 February 2020 08:19 CET | Update | https://www.mdpi.com/1424-8247/7/4/392 |
| article html file updated | 7 May 2019 16:29 CEST | Update | - |
| article html file updated | 21 March 2019 14:51 CET | Update | - |
| article html file updated | 20 August 2015 01:59 CEST | Update | - |
| article html file updated | 12 May 2014 15:31 CEST | Original file | - |
| article xml file uploaded | 12 May 2014 15:31 CEST | Original file | https://www.mdpi.com/1424-8247/7/4/392/xml |
| article pdf uploaded. | 2 April 2014 09:54 CEST | Version of Record | https://www.mdpi.com/1424-8247/7/4/392/pdf |
