| article html file updated | 7 February 2020 23:59 CET | Update | https://www.mdpi.com/1422-0067/18/2/471 |
| article html file updated | 23 September 2019 11:18 CEST | Update | - |
| article html file updated | 4 May 2019 10:02 CEST | Update | - |
| article html file updated | 2 March 2017 10:20 CET | Update | - |
| article html file updated | 22 February 2017 11:24 CET | Original file | - |
| article xml uploaded. | 22 February 2017 11:23 CET | Original file | https://www.mdpi.com/1422-0067/18/2/471/xml |
| article pdf uploaded. | 22 February 2017 11:23 CET | Version of Record | https://www.mdpi.com/1422-0067/18/2/471/pdf |
