| article html file updated | 7 February 2020 01:49 CET | Update | https://www.mdpi.com/2071-1050/7/12/15811 |
| article html file updated | 6 May 2019 05:50 CEST | Update | N/A |
| article html file updated | 26 March 2019 15:49 CET | Original file | N/A |
| article pdf uploaded. | 4 December 2015 12:31 CET | Version of Record | https://www.mdpi.com/2071-1050/7/12/15811/pdf |
| article xml uploaded. | 4 December 2015 12:31 CET | Original file | https://www.mdpi.com/2071-1050/7/12/15811/xml |
