| article html file updated | 7 February 2020 01:42 CET | Update | https://www.mdpi.com/2075-163X/5/4/531 |
| article html file updated | 6 May 2019 06:03 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:38 CET | Original file | N/A |
| article pdf uploaded. | 3 December 2015 12:00 CET | Version of Record | https://www.mdpi.com/2075-163X/5/4/531/pdf |
| article xml uploaded. | 3 December 2015 12:00 CET | Original file | https://www.mdpi.com/2075-163X/5/4/531/xml |
