| article html file updated | 6 February 2020 02:41 CET | Update | https://www.mdpi.com/1420-3049/18/6/7081 |
| article html file updated | 19 September 2019 21:53 CEST | Update | - |
| article html file updated | 8 May 2019 03:55 CEST | Update | - |
| article html file updated | 20 March 2019 23:57 CET | Update | - |
| article html file updated | 17 September 2018 06:27 CEST | Original file | - |
| article pdf uploaded. | 18 June 2013 13:59 CEST | Version of Record | https://www.mdpi.com/1420-3049/18/6/7081/pdf |
