| article html file updated | 7 February 2020 02:55 CET | Update | https://www.mdpi.com/1424-8220/16/1/50 |
| article html file updated | 6 May 2019 03:32 CEST | Update | - |
| article html file updated | 26 March 2019 17:33 CET | Original file | - |
| article pdf uploaded. | 31 December 2015 12:53 CET | Version of Record | https://www.mdpi.com/1424-8220/16/1/50/pdf |
| article xml uploaded. | 31 December 2015 12:53 CET | Original file | https://www.mdpi.com/1424-8220/16/1/50/xml |
