| article html file updated | 8 February 2020 03:43 CET | Update | https://www.mdpi.com/1422-0067/18/4/844 |
| article html file updated | 24 September 2019 08:34 CEST | Update | - |
| article html file updated | 4 May 2019 01:57 CEST | Update | - |
| article html file updated | 2 May 2017 06:12 CEST | Update | - |
| article html file updated | 17 April 2017 10:26 CEST | Original file | - |
| article xml uploaded. | 17 April 2017 10:24 CEST | Original file | https://www.mdpi.com/1422-0067/18/4/844/xml |
| article pdf uploaded. | 17 April 2017 10:24 CEST | Version of Record | https://www.mdpi.com/1422-0067/18/4/844/pdf |
