| article html file updated | 8 February 2020 03:29 CET | Update | https://www.mdpi.com/2071-1050/9/4/604 |
| article html file updated | 24 September 2019 07:07 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:24 CEST | Update | N/A |
| article html file updated | 28 April 2017 11:03 CEST | Update | N/A |
| article html file updated | 14 April 2017 10:39 CEST | Original file | N/A |
| article xml uploaded. | 14 April 2017 10:38 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/604/xml |
| article pdf uploaded. | 14 April 2017 10:38 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/604/pdf |
| article pdf uploaded. | 13 April 2017 11:36 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/604/pdf-vor |
