| article html file updated | 6 February 2020 16:34 CET | Update | https://www.mdpi.com/2072-6694/7/1/439 |
| article html file updated | 20 September 2019 18:47 CEST | Update | - |
| article html file updated | 6 May 2019 23:51 CEST | Update | - |
| article html file updated | 25 March 2019 22:53 CET | Update | - |
| article html file updated | 21 August 2015 08:43 CEST | Update | - |
| article html file updated | 1 April 2015 11:10 CEST | Original file | - |
| article xml file uploaded | 1 April 2015 11:10 CEST | Original file | https://www.mdpi.com/2072-6694/7/1/439/xml |
| article pdf uploaded. | 13 March 2015 07:57 CET | Version of Record | https://www.mdpi.com/2072-6694/7/1/439/pdf |
