| article html file updated | 7 February 2020 09:45 CET | Update | https://www.mdpi.com/1422-0067/17/6/873 |
| article html file updated | 5 May 2019 13:44 CEST | Update | - |
| article html file updated | 27 March 2019 06:41 CET | Update | - |
| article html file updated | 29 June 2016 03:40 CEST | Update | - |
| article html file updated | 3 June 2016 14:30 CEST | Original file | - |
| article xml uploaded. | 3 June 2016 14:28 CEST | Original file | https://www.mdpi.com/1422-0067/17/6/873/xml |
| article pdf uploaded. | 3 June 2016 14:28 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/6/873/pdf |
