| article html file updated | 6 February 2020 06:43 CET | Update | https://www.mdpi.com/2075-471X/3/1/12 |
| article html file updated | 7 May 2019 19:50 CEST | Update | - |
| article html file updated | 21 March 2019 11:00 CET | Original file | - |
| article pdf uploaded. | 14 January 2014 09:04 CET | Version of Record | https://www.mdpi.com/2075-471X/3/1/12/pdf |
