| article html file updated | 7 February 2020 03:48 CET | Update | https://www.mdpi.com/1420-3049/21/2/135 |
| article html file updated | 21 September 2019 10:14 CEST | Update | - |
| article html file updated | 6 May 2019 01:52 CEST | Update | - |
| article html file updated | 26 March 2019 19:12 CET | Update | - |
| article html file updated | 17 September 2018 02:49 CEST | Original file | - |
| article pdf uploaded. | 25 January 2016 09:30 CET | Version of Record | https://www.mdpi.com/1420-3049/21/2/135/pdf |
| article xml uploaded. | 25 January 2016 09:30 CET | Original file | https://www.mdpi.com/1420-3049/21/2/135/xml |
