| article html file updated | 7 February 2020 00:28 CET | Update | https://www.mdpi.com/2073-4352/5/4/491 |
| article html file updated | 6 May 2019 07:57 CEST | Update | N/A |
| article html file updated | 26 March 2019 13:51 CET | Original file | N/A |
| article pdf uploaded. | 2 November 2015 11:07 CET | Version of Record | https://www.mdpi.com/2073-4352/5/4/491/pdf |
