| article html file updated | 8 February 2020 02:26 CET | Update | https://www.mdpi.com/2071-1050/9/4/513 |
| article html file updated | 24 September 2019 01:18 CEST | Update | - |
| article html file updated | 4 May 2019 04:37 CEST | Update | - |
| article html file updated | 28 April 2017 10:47 CEST | Update | - |
| article html file updated | 29 March 2017 10:54 CEST | Original file | - |
| article xml uploaded. | 29 March 2017 10:52 CEST | Update | https://www.mdpi.com/2071-1050/9/4/513/xml |
| article pdf uploaded. | 29 March 2017 10:52 CEST | Updated version of record | https://www.mdpi.com/2071-1050/9/4/513/pdf |
| article pdf uploaded. | 28 March 2017 14:54 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/513/pdf-vor |
