| article html file updated | 17 June 2015 07:49 CEST | Update | https://www.mdpi.com/1424-8220/13/4/3998 |
| article html file updated | 5 June 2013 11:27 CEST | Original file | - |
| article xml file uploaded | 5 June 2013 11:27 CEST | Original file | https://www.mdpi.com/1424-8220/13/4/3998/xml |
| article pdf uploaded. | 25 March 2013 15:29 CET | Version of Record | https://www.mdpi.com/1424-8220/13/4/3998/pdf |
