| article html file updated | 21 August 2015 10:03 CEST | Update | https://www.mdpi.com/1424-8220/15/4/8121 |
| article html file updated | 12 May 2015 12:25 CEST | Original file | - |
| article xml file uploaded | 12 May 2015 12:25 CEST | Original file | https://www.mdpi.com/1424-8220/15/4/8121/xml |
| article pdf uploaded. | 8 April 2015 09:48 CEST | Version of Record | https://www.mdpi.com/1424-8220/15/4/8121/pdf |
