| article html file updated | 6 February 2020 06:19 CET | Update | https://www.mdpi.com/1420-3049/19/1/9 |
| article html file updated | 20 September 2019 04:37 CEST | Update | N/A |
| article html file updated | 7 May 2019 20:38 CEST | Update | N/A |
| article html file updated | 21 March 2019 09:47 CET | Update | N/A |
| article html file updated | 12 September 2018 04:57 CEST | Update | N/A |
| article html file updated | 19 August 2015 14:22 CEST | Original file | N/A |
| article pdf uploaded. | 19 December 2013 14:01 CET | Version of Record | https://www.mdpi.com/1420-3049/19/1/9/pdf |
