| article html file updated | 6 February 2020 11:03 CET | Update | https://www.mdpi.com/1999-4893/7/3/397 |
| article html file updated | 20 September 2019 10:57 CEST | Update | - |
| article html file updated | 21 March 2019 21:53 CET | Update | - |
| article html file updated | 15 February 2017 07:03 CET | Original file | - |
| article pdf uploaded. | 29 July 2014 10:28 CEST | Version of Record | https://www.mdpi.com/1999-4893/7/3/397/pdf |
