| article html file updated | 6 February 2020 10:08 CET | Update | https://www.mdpi.com/2218-1989/4/2/499 |
| article html file updated | 7 May 2019 12:45 CEST | Update | - |
| article html file updated | 21 March 2019 19:22 CET | Update | - |
| article html file updated | 20 August 2015 10:35 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/2218-1989/4/2/499/xml |
| article supplementary file uploaded. | 16 July 2014 10:52 CEST | - | https://www.mdpi.com/2218-1989/4/2/499#supplementary |
| article pdf uploaded. | 20 June 2014 14:35 CEST | Version of Record | https://www.mdpi.com/2218-1989/4/2/499/pdf |
