| article html file updated | 7 February 2020 05:13 CET | Update | https://www.mdpi.com/1422-0067/17/3/309 |
| article html file updated | 5 May 2019 22:52 CEST | Update | - |
| article html file updated | 26 March 2019 22:07 CET | Update | - |
| article html file updated | 30 March 2016 12:01 CEST | Original file | - |
| article pdf uploaded. | 29 February 2016 13:14 CET | Version of Record | https://www.mdpi.com/1422-0067/17/3/309/pdf |
| article xml uploaded. | 29 February 2016 13:14 CET | Original file | https://www.mdpi.com/1422-0067/17/3/309/xml |
