| article html file updated | 6 February 2020 23:06 CET | Update | https://www.mdpi.com/2077-1312/3/3/1066 |
| article html file updated | 6 May 2019 10:43 CEST | Update | N/A |
| article html file updated | 26 March 2019 11:19 CET | Update | N/A |
| article html file updated | 10 November 2017 07:04 CET | Original file | N/A |
| article pdf uploaded. | 22 September 2015 14:47 CEST | Version of Record | https://www.mdpi.com/2077-1312/3/3/1066/pdf |
