| article html file updated | 7 February 2020 10:13 CET | Update | https://www.mdpi.com/2076-328X/6/2/12 |
| article html file updated | 5 May 2019 12:51 CEST | Update | - |
| article html file updated | 27 March 2019 07:36 CET | Update | - |
| article html file updated | 4 July 2016 08:05 CEST | Original file | - |
| article pdf uploaded. | 15 June 2016 14:27 CEST | Version of Record | https://www.mdpi.com/2076-328X/6/2/12/pdf |
