| article html file updated | 6 February 2020 13:17 CET | Update | https://www.mdpi.com/2075-471X/3/4/780 |
| article html file updated | 20 September 2019 14:24 CEST | Update | - |
| article html file updated | 7 May 2019 06:13 CEST | Update | - |
| article html file updated | 25 March 2019 16:53 CET | Update | - |
| article html file updated | 16 March 2017 10:58 CET | Original file | - |
| article pdf uploaded. | 31 October 2014 12:04 CET | Version of Record | https://www.mdpi.com/2075-471X/3/4/780/pdf |
