| article html file updated | 6 February 2020 10:43 CET | Update | https://www.mdpi.com/2079-3197/2/3/61 |
| article html file updated | 7 May 2019 11:37 CEST | Update | - |
| article html file updated | 21 March 2019 20:55 CET | Update | - |
| article html file updated | 20 August 2015 12:48 CEST | Update | - |
| article html file updated | 3 September 2014 12:52 CEST | Original file | - |
| article xml file uploaded | 3 September 2014 12:52 CEST | Original file | https://www.mdpi.com/2079-3197/2/3/61/xml |
| article pdf uploaded. | 15 July 2014 13:45 CEST | Version of Record | https://www.mdpi.com/2079-3197/2/3/61/pdf |
