| article html file updated | 7 February 2020 02:04 CET | Update | https://www.mdpi.com/2071-1050/7/12/15821 |
| article html file updated | 6 May 2019 05:18 CEST | Update | N/A |
| article html file updated | 26 March 2019 16:13 CET | Original file | N/A |
| article pdf uploaded. | 10 December 2015 11:32 CET | Version of Record | https://www.mdpi.com/2071-1050/7/12/15821/pdf |
| article xml uploaded. | 10 December 2015 11:32 CET | Original file | https://www.mdpi.com/2071-1050/7/12/15821/xml |
