| article html file updated | 6 February 2020 21:38 CET | Update | https://www.mdpi.com/1999-4893/8/3/621 |
| article html file updated | 6 May 2019 13:48 CEST | Update | - |
| article html file updated | 26 March 2019 08:29 CET | Update | - |
| article html file updated | 16 October 2015 12:14 CEST | Update | - |
| article xml file uploaded | 16 October 2015 12:14 CEST | Original file | https://www.mdpi.com/1999-4893/8/3/621/xml |
| article html file updated | 21 August 2015 15:33 CEST | Original file | - |
| article pdf uploaded. | 11 August 2015 14:37 CEST | Version of Record | https://www.mdpi.com/1999-4893/8/3/621/pdf |
