| article html file updated | 6 February 2020 07:20 CET | Update | https://www.mdpi.com/2304-6767/2/1/41 |
| article html file updated | 7 May 2019 18:30 CEST | Update | N/A |
| article html file updated | 21 March 2019 12:30 CET | Update | N/A |
| article html file updated | 19 August 2015 20:50 CEST | Original file | N/A |
| article pdf uploaded. | 19 February 2014 11:59 CET | Version of Record | https://www.mdpi.com/2304-6767/2/1/41/pdf |
