| article html file updated | 7 February 2020 03:05 CET | Update | https://www.mdpi.com/1422-0067/17/1/57 |
| article html file updated | 6 May 2019 03:14 CEST | Update | - |
| article html file updated | 26 March 2019 17:49 CET | Original file | - |
| article pdf uploaded. | 5 January 2016 15:30 CET | Version of Record | https://www.mdpi.com/1422-0067/17/1/57/pdf |
| article xml uploaded. | 5 January 2016 15:30 CET | Original file | https://www.mdpi.com/1422-0067/17/1/57/xml |
