| article html file updated | 6 February 2020 03:31 CET | Update | https://www.mdpi.com/1420-3049/18/8/9117 |
| article html file updated | 19 September 2019 23:28 CEST | Update | - |
| article html file updated | 8 May 2019 02:17 CEST | Update | - |
| article html file updated | 21 March 2019 02:12 CET | Update | - |
| article html file updated | 14 September 2018 08:39 CEST | Update | - |
| article html file updated | 15 June 2016 11:27 CEST | Original file | - |
| article pdf uploaded. | 30 July 2013 14:21 CEST | Version of Record | https://www.mdpi.com/1420-3049/18/8/9117/pdf |
