| article html file updated | 7 February 2020 03:45 CET | Update | https://www.mdpi.com/1420-3049/21/1/131 |
| article html file updated | 6 May 2019 01:58 CEST | Update | - |
| article html file updated | 26 March 2019 19:04 CET | Update | - |
| article html file updated | 12 November 2018 04:34 CET | Original file | - |
| article pdf uploaded. | 21 January 2016 12:21 CET | Version of Record | https://www.mdpi.com/1420-3049/21/1/131/pdf |
| article xml uploaded. | 21 January 2016 12:21 CET | Original file | https://www.mdpi.com/1420-3049/21/1/131/xml |
