| article html file updated | 6 February 2020 07:00 CET | Update | https://www.mdpi.com/2076-0760/3/1/24 |
| article html file updated | 7 May 2019 19:13 CEST | Update | - |
| article html file updated | 21 March 2019 11:42 CET | Update | - |
| article html file updated | 26 April 2016 10:04 CEST | Original file | - |
| article pdf uploaded. | 27 January 2014 17:42 CET | Version of Record | https://www.mdpi.com/2076-0760/3/1/24/pdf |
