| article html file updated | 8 February 2020 02:16 CET | Update | https://www.mdpi.com/2071-1050/9/4/495 |
| article html file updated | 24 September 2019 00:22 CEST | Update | - |
| article html file updated | 4 May 2019 04:59 CEST | Update | - |
| article html file updated | 28 April 2017 10:44 CEST | Update | - |
| article html file updated | 28 March 2017 12:42 CEST | Original file | - |
| article xml uploaded. | 28 March 2017 12:40 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/495/xml |
| article pdf uploaded. | 28 March 2017 12:40 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/495/pdf |
| article pdf uploaded. | 25 March 2017 11:35 CET | Version of Record | https://www.mdpi.com/2071-1050/9/4/495/pdf-vor |
