| article html file updated | 7 February 2020 01:17 CET | Update | https://www.mdpi.com/2076-2615/5/4/404 |
| article html file updated | 6 May 2019 06:47 CEST | Update | - |
| article html file updated | 26 March 2019 15:00 CET | Original file | - |
| article pdf uploaded. | 24 November 2015 13:46 CET | Version of Record | https://www.mdpi.com/2076-2615/5/4/404/pdf |
| article xml uploaded. | 24 November 2015 13:46 CET | Original file | https://www.mdpi.com/2076-2615/5/4/404/xml |
