| article html file updated | 6 February 2020 22:21 CET | Update | https://www.mdpi.com/2226-4310/2/3/505 |
| article html file updated | 6 May 2019 12:16 CEST | Update | N/A |
| article html file updated | 26 March 2019 09:53 CET | Original file | N/A |
| article pdf uploaded. | 1 September 2015 13:38 CEST | Version of Record | https://www.mdpi.com/2226-4310/2/3/505/pdf |
