| article html file updated | 6 February 2020 19:42 CET | Update | https://www.mdpi.com/2218-2004/3/2/260 |
| article html file updated | 6 May 2019 17:44 CEST | Update | - |
| article html file updated | 26 March 2019 04:47 CET | Update | - |
| article html file updated | 21 August 2015 13:40 CEST | Update | - |
| article html file updated | 10 July 2015 05:50 CEST | Original file | - |
| article xml file uploaded | 10 July 2015 05:50 CEST | Original file | https://www.mdpi.com/2218-2004/3/2/260/xml |
| article pdf uploaded. | 15 June 2015 14:33 CEST | Version of Record | https://www.mdpi.com/2218-2004/3/2/260/pdf |
