| article html file updated | 8 February 2020 18:04 CET | Update | https://www.mdpi.com/2077-1444/8/10/220 |
| article html file updated | 2 May 2019 22:08 CEST | Update | - |
| article html file updated | 1 November 2017 02:25 CET | Update | - |
| article html file updated | 12 October 2017 04:50 CEST | Original file | - |
| article xml uploaded. | 12 October 2017 04:49 CEST | Original file | https://www.mdpi.com/2077-1444/8/10/220/xml |
| article pdf uploaded. | 12 October 2017 04:49 CEST | Updated version of record | https://www.mdpi.com/2077-1444/8/10/220/pdf |
| article pdf uploaded. | 10 October 2017 13:57 CEST | Version of Record | https://www.mdpi.com/2077-1444/8/10/220/pdf-vor |
