| article html file updated | 7 February 2020 07:24 CET | Update | https://www.mdpi.com/1424-8220/16/4/553 |
| article html file updated | 5 May 2019 18:22 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:08 CET | Update | N/A |
| article html file updated | 29 April 2016 05:10 CEST | Update | N/A |
| article html file updated | 16 April 2016 11:36 CEST | Original file | N/A |
| article xml uploaded. | 16 April 2016 11:34 CEST | Original file | https://www.mdpi.com/1424-8220/16/4/553/xml |
| article pdf uploaded. | 16 April 2016 11:34 CEST | Version of Record | https://www.mdpi.com/1424-8220/16/4/553/pdf |
