| article html file updated | 6 February 2020 05:11 CET | Update | https://www.mdpi.com/2075-4426/3/4/288 |
| article html file updated | 20 September 2019 02:34 CEST | Update | - |
| article html file updated | 7 May 2019 22:48 CEST | Update | - |
| article html file updated | 21 March 2019 06:43 CET | Update | - |
| article html file updated | 17 June 2015 14:18 CEST | Update | - |
| article html file updated | 21 July 2014 03:42 CEST | Original file | - |
| article xml file uploaded | 21 July 2014 03:42 CEST | Original file | https://www.mdpi.com/2075-4426/3/4/288/xml |
| article pdf uploaded. | 25 October 2013 16:02 CEST | Version of Record | https://www.mdpi.com/2075-4426/3/4/288/pdf |
