| article html file updated | 7 February 2020 01:51 CET | Update | https://www.mdpi.com/1996-1073/8/12/12399 |
| article html file updated | 6 May 2019 05:45 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:53 CET | Original file | N/A |
| article pdf uploaded. | 4 December 2015 17:12 CET | Version of Record | https://www.mdpi.com/1996-1073/8/12/12399/pdf |
