| article html file updated | 7 February 2020 10:10 CET | Update | https://www.mdpi.com/1422-0067/17/6/939 |
| article html file updated | 5 May 2019 12:56 CEST | Update | - |
| article html file updated | 27 March 2019 07:30 CET | Update | - |
| article html file updated | 29 June 2016 03:57 CEST | Update | - |
| article html file updated | 14 June 2016 13:39 CEST | Original file | - |
| article xml uploaded. | 14 June 2016 13:38 CEST | Update | https://www.mdpi.com/1422-0067/17/6/939/xml |
| article pdf uploaded. | 14 June 2016 13:38 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/6/939/pdf |
