| article html file updated | 17 June 2015 06:39 CEST | Update | https://www.mdpi.com/1424-8220/13/2/2506 |
| article html file updated | 30 October 2013 10:00 CET | Update | N/A |
| article xml file uploaded | 30 October 2013 09:59 CET | Update | https://www.mdpi.com/1424-8220/13/2/2506/xml |
| article html file updated | 23 April 2013 15:28 CEST | Update | N/A |
| article xml file uploaded | 23 April 2013 15:28 CEST | Update | N/A |
| article html file updated | 25 March 2013 12:47 CET | Original file | N/A |
| article xml file uploaded | 25 March 2013 12:46 CET | Original file | N/A |
| article pdf uploaded. | 18 February 2013 12:22 CET | Version of Record | https://www.mdpi.com/1424-8220/13/2/2506/pdf |
