| article html file updated | 6 February 2020 07:38 CET | Update | https://www.mdpi.com/2072-6643/6/3/974 |
| article html file updated | 7 May 2019 17:53 CEST | Update | - |
| article html file updated | 21 March 2019 13:14 CET | Update | - |
| article html file updated | 19 August 2015 22:14 CEST | Update | - |
| article html file updated | 28 April 2014 10:56 CEST | Original file | - |
| article xml file uploaded | 28 April 2014 10:56 CEST | Original file | https://www.mdpi.com/2072-6643/6/3/974/xml |
| article pdf uploaded. | 3 March 2014 10:49 CET | Version of Record | https://www.mdpi.com/2072-6643/6/3/974/pdf |
