| article html file updated | 7 February 2020 01:18 CET | Update | https://www.mdpi.com/2073-4360/7/11/1521 |
| article html file updated | 6 May 2019 06:46 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:01 CET | Original file | N/A |
| article xml uploaded. | 24 November 2015 11:05 CET | Original file | https://www.mdpi.com/2073-4360/7/11/1521/xml |
| article pdf uploaded. | 24 November 2015 11:03 CET | Version of Record | https://www.mdpi.com/2073-4360/7/11/1521/pdf |
