| article html file updated | 17 June 2015 04:50 CEST | Update | https://www.mdpi.com/1424-8220/12/12/17414 |
| article html file updated | 7 February 2013 17:26 CET | Update | - |
| article html file updated | 25 January 2013 15:37 CET | Original file | - |
| article xml file uploaded | 25 January 2013 15:36 CET | Original file | https://www.mdpi.com/1424-8220/12/12/17414/xml |
