| article html file updated | 6 February 2020 10:46 CET | Update | https://www.mdpi.com/2218-273X/4/3/662 |
| article html file updated | 21 March 2019 21:02 CET | Update | - |
| article html file updated | 14 March 2018 13:28 CET | Update | - |
| article html file updated | 20 August 2015 12:56 CEST | Update | - |
| article html file updated | 11 October 2014 03:50 CEST | Original file | - |
| article xml file uploaded | 11 October 2014 03:50 CEST | Original file | https://www.mdpi.com/2218-273X/4/3/662/xml |
| article pdf uploaded. | 16 July 2014 17:11 CEST | Version of Record | https://www.mdpi.com/2218-273X/4/3/662/pdf |
