| article html file updated | 6 February 2020 01:13 CET | Update | https://www.mdpi.com/1420-3049/18/4/3806 |
| article html file updated | 8 May 2019 06:55 CEST | Update | - |
| article html file updated | 20 March 2019 20:17 CET | Update | - |
| article html file updated | 17 September 2018 10:10 CEST | Update | - |
| article html file updated | 27 April 2016 04:41 CEST | Original file | - |
| article pdf uploaded. | 26 March 2013 14:26 CET | Version of Record | https://www.mdpi.com/1420-3049/18/4/3806/pdf |
