| article html file updated | 7 February 2020 06:54 CET | Update | https://www.mdpi.com/1422-0067/17/4/511 |
| article html file updated | 5 May 2019 19:25 CEST | Update | - |
| article html file updated | 27 March 2019 01:11 CET | Update | - |
| article html file updated | 28 April 2016 05:00 CEST | Update | - |
| article html file updated | 6 April 2016 13:48 CEST | Original file | - |
| article xml uploaded. | 6 April 2016 13:47 CEST | Original file | https://www.mdpi.com/1422-0067/17/4/511/xml |
| article pdf uploaded. | 6 April 2016 13:47 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/4/511/pdf |
