| article html file updated | 6 February 2020 07:02 CET | Update | https://www.mdpi.com/2076-3425/4/1/73 |
| article html file updated | 7 May 2019 19:06 CEST | Update | - |
| article html file updated | 21 March 2019 11:49 CET | Update | - |
| article html file updated | 19 August 2015 19:18 CEST | Update | - |
| article html file updated | 24 June 2014 12:03 CEST | Update | - |
| article xml file uploaded | 24 June 2014 12:03 CEST | Update | https://www.mdpi.com/2076-3425/4/1/73/xml |
| article html file updated | 23 June 2014 05:49 CEST | Original file | - |
| article xml file uploaded | 23 June 2014 05:49 CEST | Original file | - |
| article pdf uploaded. | 28 January 2014 15:52 CET | Version of Record | https://www.mdpi.com/2076-3425/4/1/73/pdf |
