| article html file updated | 6 February 2020 12:51 CET | Update | https://www.mdpi.com/2075-471X/3/4/706 |
| article html file updated | 20 September 2019 13:47 CEST | Update | N/A |
| article html file updated | 7 May 2019 07:03 CEST | Update | N/A |
| article html file updated | 22 March 2019 02:40 CET | Original file | N/A |
| article pdf uploaded. | 15 October 2014 15:57 CEST | Version of Record | https://www.mdpi.com/2075-471X/3/4/706/pdf |
