| article html file updated | 6 February 2020 21:15 CET | Update | https://www.mdpi.com/2079-6412/5/3/425 |
| article html file updated | 6 May 2019 14:37 CEST | Update | - |
| article html file updated | 26 March 2019 07:44 CET | Update | - |
| article html file updated | 19 May 2016 11:49 CEST | Update | - |
| article html file updated | 21 August 2015 15:19 CEST | Original file | - |
| article pdf uploaded. | 30 July 2015 16:52 CEST | Version of Record | https://www.mdpi.com/2079-6412/5/3/425/pdf |
