| article html file updated | 7 February 2020 09:40 CET | Update | https://www.mdpi.com/1422-0067/17/6/870 |
| article html file updated | 5 May 2019 13:52 CEST | Update | - |
| article html file updated | 27 March 2019 06:31 CET | Update | - |
| article html file updated | 29 June 2016 03:38 CEST | Update | - |
| article html file updated | 2 June 2016 14:03 CEST | Original file | - |
| article xml uploaded. | 2 June 2016 14:02 CEST | Original file | https://www.mdpi.com/1422-0067/17/6/870/xml |
| article pdf uploaded. | 2 June 2016 14:02 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/6/870/pdf |
