| article html file updated | 6 February 2020 02:28 CET | Update | https://www.mdpi.com/1420-3049/18/6/6550 |
| article html file updated | 19 September 2019 21:27 CEST | Update | - |
| article html file updated | 8 May 2019 04:24 CEST | Update | - |
| article html file updated | 20 March 2019 23:23 CET | Update | - |
| article html file updated | 17 September 2018 05:47 CEST | Update | - |
| article html file updated | 15 April 2016 02:54 CEST | Original file | - |
| article pdf uploaded. | 4 June 2013 10:32 CEST | Version of Record | https://www.mdpi.com/1420-3049/18/6/6550/pdf |
