| article html file updated | 6 February 2020 01:47 CET | Update | https://www.mdpi.com/1424-8247/6/5/579 |
| article html file updated | 8 May 2019 05:47 CEST | Update | N/A |
| article html file updated | 20 March 2019 21:44 CET | Update | N/A |
| article html file updated | 17 June 2015 08:51 CEST | Update | N/A |
| article html file updated | 13 September 2013 17:19 CEST | Original file | N/A |
| article xml file uploaded | 13 September 2013 17:19 CEST | Original file | https://www.mdpi.com/1424-8247/6/5/579/xml |
| article pdf uploaded. | 26 April 2013 14:37 CEST | Version of Record | https://www.mdpi.com/1424-8247/6/5/579/pdf |
