| article html file updated | 6 February 2020 22:32 CET | Update | https://www.mdpi.com/2073-4336/6/3/347 |
| article html file updated | 21 September 2019 03:01 CEST | Update | - |
| article html file updated | 6 May 2019 11:53 CEST | Update | - |
| article html file updated | 26 March 2019 10:13 CET | Original file | - |
| article pdf uploaded. | 8 September 2015 12:39 CEST | Version of Record | https://www.mdpi.com/2073-4336/6/3/347/pdf |
