| article html file updated | 7 February 2020 04:24 CET | Update | https://www.mdpi.com/1424-8220/16/2/223 |
| article html file updated | 6 May 2019 00:43 CEST | Update | N/A |
| article html file updated | 26 March 2019 20:23 CET | Original file | N/A |
| article pdf uploaded. | 19 February 2016 10:23 CET | Updated version of record | https://www.mdpi.com/1424-8220/16/2/223/pdf |
| article xml uploaded. | 19 February 2016 10:23 CET | Original file | https://www.mdpi.com/1424-8220/16/2/223/xml |
| article pdf uploaded. | 6 February 2016 08:36 CET | Version of Record | https://www.mdpi.com/1424-8220/16/2/223/pdf-vor |
