| article html file updated | 6 February 2020 21:14 CET | Update | https://www.mdpi.com/2076-0760/4/3/533 |
| article html file updated | 21 September 2019 01:01 CEST | Update | N/A |
| article html file updated | 6 May 2019 14:38 CEST | Update | N/A |
| article html file updated | 26 March 2019 07:43 CET | Original file | N/A |
| article pdf uploaded. | 30 July 2015 15:50 CEST | Version of Record | https://www.mdpi.com/2076-0760/4/3/533/pdf |
