| article html file updated | 6 February 2020 12:24 CET | Update | https://www.mdpi.com/2227-9091/2/3/349 |
| article html file updated | 7 May 2019 07:59 CEST | Update | - |
| article html file updated | 22 March 2019 01:20 CET | Original file | - |
| article pdf uploaded. | 23 September 2014 08:49 CEST | Version of Record | https://www.mdpi.com/2227-9091/2/3/349/pdf |
