| article html file updated | 6 February 2020 21:55 CET | Update | https://www.mdpi.com/2304-6767/3/3/77 |
| article html file updated | 21 September 2019 02:08 CEST | Update | N/A |
| article html file updated | 6 May 2019 13:12 CEST | Update | N/A |
| article html file updated | 26 March 2019 09:02 CET | Original file | N/A |
| article pdf uploaded. | 19 August 2015 15:59 CEST | Version of Record | https://www.mdpi.com/2304-6767/3/3/77/pdf |
