| article html file updated | 7 February 2020 04:25 CET | Update | https://www.mdpi.com/1422-0067/17/2/220 |
| article html file updated | 6 May 2019 00:41 CEST | Update | - |
| article html file updated | 26 March 2019 20:24 CET | Original file | - |
| article pdf uploaded. | 6 February 2016 09:42 CET | Version of Record | https://www.mdpi.com/1422-0067/17/2/220/pdf |
| article xml uploaded. | 6 February 2016 09:42 CET | Original file | https://www.mdpi.com/1422-0067/17/2/220/xml |
