| article html file updated | 7 February 2020 04:20 CET | Update | https://www.mdpi.com/1424-8220/16/2/203 |
| article html file updated | 6 May 2019 00:51 CEST | Update | - |
| article html file updated | 26 March 2019 20:15 CET | Original file | - |
| article pdf uploaded. | 5 February 2016 09:39 CET | Version of Record | https://www.mdpi.com/1424-8220/16/2/203/pdf |
| article xml uploaded. | 5 February 2016 09:39 CET | Original file | https://www.mdpi.com/1424-8220/16/2/203/xml |
