| article html file updated | 8 February 2020 14:45 CET | Update | https://www.mdpi.com/1422-0067/18/9/1868 |
| article html file updated | 26 September 2019 19:44 CEST | Update | - |
| article html file updated | 3 May 2019 04:38 CEST | Update | - |
| article html file updated | 30 September 2017 12:09 CEST | Update | - |
| article html file updated | 29 August 2017 12:11 CEST | Original file | - |
| article xml uploaded. | 29 August 2017 12:09 CEST | Original file | https://www.mdpi.com/1422-0067/18/9/1868/xml |
| article pdf uploaded. | 29 August 2017 12:09 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/9/1868/pdf |
