| article html file updated | 7 February 2020 00:46 CET | Update | https://www.mdpi.com/2075-4663/3/4/335 |
| article html file updated | 6 May 2019 07:21 CEST | Update | - |
| article html file updated | 26 March 2019 14:27 CET | Original file | - |
| article pdf uploaded. | 11 November 2015 10:02 CET | Updated version of record | https://www.mdpi.com/2075-4663/3/4/335/pdf |
| article pdf uploaded. | 10 November 2015 15:27 CET | Version of Record | https://www.mdpi.com/2075-4663/3/4/335/pdf-vor |
