| article html file updated | 7 February 2020 01:41 CET | Update | https://www.mdpi.com/2075-4701/5/4/2277 |
| article html file updated | 6 May 2019 06:05 CEST | Update | - |
| article html file updated | 26 March 2019 15:36 CET | Original file | - |
| article pdf uploaded. | 3 December 2015 13:10 CET | Version of Record | https://www.mdpi.com/2075-4701/5/4/2277/pdf |
| article xml uploaded. | 3 December 2015 13:10 CET | Original file | https://www.mdpi.com/2075-4701/5/4/2277/xml |
