| article html file updated | 6 February 2020 22:43 CET | Update | https://www.mdpi.com/2079-9276/4/3/713 |
| article html file updated | 6 May 2019 11:30 CEST | Update | - |
| article html file updated | 26 March 2019 10:35 CET | Original file | - |
| article pdf uploaded. | 11 September 2015 15:41 CEST | Version of Record | https://www.mdpi.com/2079-9276/4/3/713/pdf |
