| article html file updated | 8 February 2020 03:37 CET | Update | https://www.mdpi.com/2071-1050/9/4/613 |
| article html file updated | 24 September 2019 07:54 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:10 CEST | Update | N/A |
| article html file updated | 28 April 2017 11:05 CEST | Update | N/A |
| article html file updated | 18 April 2017 11:31 CEST | Original file | N/A |
| article xml uploaded. | 18 April 2017 11:30 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/613/xml |
| article pdf uploaded. | 18 April 2017 11:30 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/613/pdf |
| article pdf uploaded. | 14 April 2017 12:37 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/613/pdf-vor |
