| article html file updated | 6 February 2020 19:40 CET | Update | https://www.mdpi.com/2072-6643/7/6/4817 |
| article html file updated | 6 May 2019 17:49 CEST | Update | - |
| article html file updated | 26 March 2019 04:42 CET | Update | - |
| article html file updated | 21 August 2015 13:36 CEST | Update | - |
| article html file updated | 2 July 2015 10:14 CEST | Original file | - |
| article xml file uploaded | 2 July 2015 10:14 CEST | Original file | https://www.mdpi.com/2072-6643/7/6/4817/xml |
| article pdf uploaded. | 15 June 2015 09:09 CEST | Version of Record | https://www.mdpi.com/2072-6643/7/6/4817/pdf |
