| article html file updated | 7 February 2020 06:31 CET | Update | https://www.mdpi.com/2071-1050/8/4/310 |
| article html file updated | 5 May 2019 20:12 CEST | Update | - |
| article html file updated | 27 March 2019 00:30 CET | Update | - |
| article html file updated | 29 April 2016 05:42 CEST | Update | - |
| article html file updated | 28 March 2016 11:49 CEST | Original file | - |
| article xml uploaded. | 28 March 2016 11:48 CEST | Original file | https://www.mdpi.com/2071-1050/8/4/310/xml |
| article pdf uploaded. | 28 March 2016 11:48 CEST | Version of Record | https://www.mdpi.com/2071-1050/8/4/310/pdf |
