| article html file updated | 7 February 2020 03:46 CET | Update | https://www.mdpi.com/1424-8220/16/2/140 |
| article html file updated | 6 May 2019 01:55 CEST | Update | N/A |
| article html file updated | 26 March 2019 19:08 CET | Original file | N/A |
| article pdf uploaded. | 22 January 2016 12:21 CET | Version of Record | https://www.mdpi.com/1424-8220/16/2/140/pdf |
| article xml uploaded. | 22 January 2016 12:21 CET | Original file | https://www.mdpi.com/1424-8220/16/2/140/xml |
