| article html file updated | 6 February 2020 17:48 CET | Update | https://www.mdpi.com/1660-3397/13/4/2447 |
| article html file updated | 6 May 2019 21:40 CEST | Update | - |
| article html file updated | 26 March 2019 00:55 CET | Update | - |
| article html file updated | 21 August 2015 10:47 CEST | Update | - |
| article html file updated | 29 April 2015 11:30 CEST | Update | - |
| article xml file uploaded | 29 April 2015 11:30 CEST | Update | https://www.mdpi.com/1660-3397/13/4/2447/xml |
| article html file updated | 27 April 2015 11:40 CEST | Original file | - |
| article xml file uploaded | 27 April 2015 11:40 CEST | Original file | - |
| article pdf uploaded. | 22 April 2015 11:49 CEST | Updated version of record | https://www.mdpi.com/1660-3397/13/4/2447/pdf |
| article pdf uploaded. | 20 April 2015 13:15 CEST | Version of Record | https://www.mdpi.com/1660-3397/13/4/2447/pdf-vor |
