| article html file updated | 7 February 2020 03:15 CET | Update | https://www.mdpi.com/1424-8220/16/1/87 |
| article html file updated | 6 May 2019 02:56 CEST | Update | - |
| article html file updated | 26 March 2019 18:05 CET | Original file | - |
| article pdf uploaded. | 9 January 2016 11:45 CET | Version of Record | https://www.mdpi.com/1424-8220/16/1/87/pdf |
| article xml uploaded. | 9 January 2016 11:45 CET | Original file | https://www.mdpi.com/1424-8220/16/1/87/xml |
