| article html file updated | 7 February 2020 07:41 CET | Update | https://www.mdpi.com/1422-0067/17/4/611 |
| article html file updated | 5 May 2019 17:47 CEST | Update | - |
| article html file updated | 27 March 2019 02:46 CET | Update | - |
| article html file updated | 28 April 2016 05:30 CEST | Update | - |
| article html file updated | 22 April 2016 16:36 CEST | Original file | - |
| article xml uploaded. | 22 April 2016 16:35 CEST | Original file | https://www.mdpi.com/1422-0067/17/4/611/xml |
| article pdf uploaded. | 22 April 2016 16:35 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/4/611/pdf |
