| article html file updated | 6 February 2020 20:55 CET | Update | https://www.mdpi.com/1660-3397/13/7/4520 |
| article html file updated | 6 May 2019 15:15 CEST | Update | - |
| article html file updated | 26 March 2019 07:07 CET | Update | - |
| article html file updated | 21 August 2015 15:08 CEST | Update | - |
| article html file updated | 27 July 2015 12:53 CEST | Original file | - |
| article xml file uploaded | 27 July 2015 12:53 CEST | Original file | https://www.mdpi.com/1660-3397/13/7/4520/xml |
| article pdf uploaded. | 22 July 2015 11:24 CEST | Version of Record | https://www.mdpi.com/1660-3397/13/7/4520/pdf |
