| article html file updated | 6 February 2020 18:26 CET | Update | https://www.mdpi.com/2077-1444/6/2/594 |
| article html file updated | 20 September 2019 21:07 CEST | Update | N/A |
| article html file updated | 6 May 2019 20:26 CEST | Update | N/A |
| article html file updated | 26 March 2019 02:11 CET | Update | N/A |
| article html file updated | 21 August 2015 11:48 CEST | Original file | N/A |
| article pdf uploaded. | 8 May 2015 10:21 CEST | Version of Record | https://www.mdpi.com/2077-1444/6/2/594/pdf |
