| article html file updated | 8 February 2020 16:13 CET | Update | https://www.mdpi.com/1422-0067/18/9/1971 |
| article html file updated | 27 September 2019 03:39 CEST | Update | - |
| article html file updated | 3 May 2019 01:56 CEST | Update | - |
| article html file updated | 30 September 2017 12:23 CEST | Update | - |
| article html file updated | 14 September 2017 14:34 CEST | Original file | - |
| article xml uploaded. | 14 September 2017 14:33 CEST | Original file | https://www.mdpi.com/1422-0067/18/9/1971/xml |
| article pdf uploaded. | 14 September 2017 14:33 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/9/1971/pdf |
