| article html file updated | 6 February 2020 22:32 CET | Update | https://www.mdpi.com/2226-4310/2/3/524 |
| article html file updated | 6 May 2019 11:53 CEST | Update | - |
| article html file updated | 26 March 2019 10:13 CET | Original file | - |
| article pdf uploaded. | 8 September 2015 12:20 CEST | Version of Record | https://www.mdpi.com/2226-4310/2/3/524/pdf |
