| article html file updated | 7 February 2020 05:15 CET | Update | https://www.mdpi.com/2071-1050/8/3/227 |
| article html file updated | 5 May 2019 22:49 CEST | Update | - |
| article html file updated | 26 March 2019 22:11 CET | Update | - |
| article html file updated | 31 March 2016 08:38 CEST | Original file | - |
| article pdf uploaded. | 1 March 2016 09:22 CET | Version of Record | https://www.mdpi.com/2071-1050/8/3/227/pdf |
| article xml uploaded. | 1 March 2016 09:22 CET | Original file | https://www.mdpi.com/2071-1050/8/3/227/xml |
