| article html file updated | 7 February 2020 00:34 CET | Update | https://www.mdpi.com/2075-4418/5/4/475 |
| article html file updated | 6 May 2019 07:44 CEST | Update | - |
| article html file updated | 26 March 2019 14:03 CET | Original file | - |
| article pdf uploaded. | 13 November 2015 09:25 CET | Updated version of record | https://www.mdpi.com/2075-4418/5/4/475/pdf |
| article pdf uploaded. | 4 November 2015 14:17 CET | Version of Record | https://www.mdpi.com/2075-4418/5/4/475/pdf-vor |
