| article html file updated | 6 February 2020 11:13 CET | Update | https://www.mdpi.com/2227-9717/2/3/596 |
| article html file updated | 20 September 2019 11:17 CEST | Update | N/A |
| article html file updated | 7 May 2019 10:29 CEST | Update | N/A |
| article html file updated | 21 March 2019 22:24 CET | Update | N/A |
| article html file updated | 20 August 2015 14:29 CEST | Original file | N/A |
| article pdf uploaded. | 5 August 2014 11:23 CEST | Version of Record | https://www.mdpi.com/2227-9717/2/3/596/pdf |
