| article html file updated | 6 February 2020 08:31 CET | Update | https://www.mdpi.com/2218-1989/4/2/166 |
| article html file updated | 7 May 2019 16:03 CEST | Update | - |
| article html file updated | 21 March 2019 15:20 CET | Update | - |
| article html file updated | 20 August 2015 02:51 CEST | Update | - |
| article html file updated | 18 July 2014 03:58 CEST | Original file | - |
| article xml file uploaded | 18 July 2014 03:58 CEST | Original file | https://www.mdpi.com/2218-1989/4/2/166/xml |
| article pdf uploaded. | 10 April 2014 13:20 CEST | Version of Record | https://www.mdpi.com/2218-1989/4/2/166/pdf |
