| article html file updated | 6 February 2020 10:44 CET | Update | https://www.mdpi.com/2077-0375/4/3/372 |
| article html file updated | 7 May 2019 11:36 CEST | Update | - |
| article html file updated | 21 March 2019 20:56 CET | Update | - |
| article html file updated | 20 August 2015 12:49 CEST | Update | - |
| article html file updated | 14 October 2014 06:28 CEST | Original file | - |
| article xml file uploaded | 14 October 2014 06:28 CEST | Original file | https://www.mdpi.com/2077-0375/4/3/372/xml |
| article pdf uploaded. | 15 July 2014 14:12 CEST | Version of Record | https://www.mdpi.com/2077-0375/4/3/372/pdf |
