| article html file updated | 6 February 2020 08:41 CET | Update | https://www.mdpi.com/2218-6581/3/2/149 |
| article html file updated | 7 May 2019 15:42 CEST | Update | N/A |
| article html file updated | 21 March 2019 15:44 CET | Update | N/A |
| article html file updated | 20 August 2015 03:44 CEST | Update | N/A |
| article html file updated | 14 August 2014 12:07 CEST | Original file | N/A |
| article xml file uploaded | 14 August 2014 12:07 CEST | Original file | https://www.mdpi.com/2218-6581/3/2/149/xml |
| article pdf uploaded. | 17 April 2014 15:39 CEST | Version of Record | https://www.mdpi.com/2218-6581/3/2/149/pdf |
