| article html file updated | 7 February 2020 03:16 CET | Update | https://www.mdpi.com/2071-1050/8/1/64 |
| article html file updated | 6 May 2019 02:53 CEST | Update | - |
| article html file updated | 26 March 2019 18:07 CET | Original file | - |
| article pdf uploaded. | 13 January 2016 14:20 CET | Updated version of record | https://www.mdpi.com/2071-1050/8/1/64/pdf |
| article xml uploaded. | 13 January 2016 14:20 CET | Update | https://www.mdpi.com/2071-1050/8/1/64/xml |
| article pdf uploaded. | 11 January 2016 13:02 CET | Version of Record | https://www.mdpi.com/2071-1050/8/1/64/pdf-vor |
| article xml uploaded. | 11 January 2016 13:02 CET | Original file | - |
