| article html file updated | 7 February 2020 02:38 CET | Update | https://www.mdpi.com/1420-3049/21/1/17 |
| article html file updated | 21 September 2019 08:30 CEST | Update | - |
| article html file updated | 6 May 2019 04:08 CEST | Update | - |
| article html file updated | 26 March 2019 17:08 CET | Update | - |
| article html file updated | 12 November 2018 04:00 CET | Original file | - |
| article pdf uploaded. | 23 December 2015 12:41 CET | Version of Record | https://www.mdpi.com/1420-3049/21/1/17/pdf |
| article xml uploaded. | 23 December 2015 12:41 CET | Original file | https://www.mdpi.com/1420-3049/21/1/17/xml |
