| article html file updated | 6 February 2020 07:03 CET | Update | https://www.mdpi.com/2079-6439/2/1/34 |
| article html file updated | 7 May 2019 19:05 CEST | Update | - |
| article html file updated | 21 March 2019 11:50 CET | Update | - |
| article html file updated | 19 August 2015 19:19 CEST | Update | - |
| article html file updated | 24 June 2014 12:08 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:08 CEST | Original file | https://www.mdpi.com/2079-6439/2/1/34/xml |
| article pdf uploaded. | 28 January 2014 16:35 CET | Version of Record | https://www.mdpi.com/2079-6439/2/1/34/pdf |
