| article html file updated | 7 February 2020 05:25 CET | Update | https://www.mdpi.com/1420-3049/21/3/71 |
| article html file updated | 5 May 2019 22:29 CEST | Update | - |
| article html file updated | 26 March 2019 22:30 CET | Update | - |
| article html file updated | 17 September 2018 02:49 CEST | Update | - |
| article html file updated | 31 March 2016 02:43 CEST | Original file | - |
| article pdf uploaded. | 3 March 2016 11:50 CET | Version of Record | https://www.mdpi.com/1420-3049/21/3/71/pdf |
| article xml uploaded. | 3 March 2016 11:50 CET | Original file | https://www.mdpi.com/1420-3049/21/3/71/xml |
