| article html file updated | 7 February 2020 09:12 CET | Update | https://www.mdpi.com/1420-3049/21/6/681 |
| article html file updated | 21 September 2019 17:45 CEST | Update | - |
| article html file updated | 5 May 2019 14:50 CEST | Update | - |
| article html file updated | 27 March 2019 05:36 CET | Update | - |
| article html file updated | 12 November 2018 03:57 CET | Update | - |
| article html file updated | 29 June 2016 11:49 CEST | Update | - |
| article html file updated | 24 May 2016 10:53 CEST | Original file | - |
| article xml uploaded. | 24 May 2016 10:51 CEST | Update | https://www.mdpi.com/1420-3049/21/6/681/xml |
| article pdf uploaded. | 24 May 2016 10:51 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/6/681/pdf |
