| article html file updated | 7 February 2020 02:44 CET | Update | https://www.mdpi.com/1424-8220/16/1/18 |
| article html file updated | 6 May 2019 03:54 CEST | Update | - |
| article html file updated | 26 March 2019 17:17 CET | Original file | - |
| article pdf uploaded. | 21 January 2016 13:51 CET | Updated version of record | https://www.mdpi.com/1424-8220/16/1/18/pdf |
| article pdf uploaded. | 18 January 2016 12:12 CET | Updated version of record | https://www.mdpi.com/1424-8220/16/1/18/pdf-vor |
| article pdf uploaded. | 6 January 2016 10:32 CET | Updated version of record | https://www.mdpi.com/1424-8220/16/1/18/pdf-vor |
| article pdf uploaded. | 25 December 2015 09:57 CET | Version of Record | https://www.mdpi.com/1424-8220/16/1/18/pdf-vor |
| article xml uploaded. | 25 December 2015 09:57 CET | Original file | https://www.mdpi.com/1424-8220/16/1/18/xml |
