| article html file updated | 7 February 2020 02:31 CET | Update | https://www.mdpi.com/1424-8220/16/1/8 |
| article html file updated | 6 May 2019 04:23 CEST | Update | - |
| article html file updated | 26 March 2019 16:57 CET | Original file | - |
| article pdf uploaded. | 22 December 2015 17:54 CET | Updated version of record | https://www.mdpi.com/1424-8220/16/1/8/pdf |
| article pdf uploaded. | 22 December 2015 15:15 CET | Updated version of record | - |
| article pdf uploaded. | 22 December 2015 13:40 CET | Version of Record | - |
| article xml uploaded. | 22 December 2015 13:40 CET | Original file | https://www.mdpi.com/1424-8220/16/1/8/xml |
