| article html file updated | 7 February 2020 03:19 CET | Update | https://www.mdpi.com/2071-1050/8/1/70 |
| article html file updated | 6 May 2019 02:47 CEST | Update | - |
| article html file updated | 26 March 2019 18:14 CET | Original file | - |
| article pdf uploaded. | 15 January 2016 13:29 CET | Updated version of record | https://www.mdpi.com/2071-1050/8/1/70/pdf |
| article xml uploaded. | 15 January 2016 13:29 CET | Update | https://www.mdpi.com/2071-1050/8/1/70/xml |
| article pdf uploaded. | 12 January 2016 11:43 CET | Version of Record | https://www.mdpi.com/2071-1050/8/1/70/pdf-vor |
| article xml uploaded. | 12 January 2016 11:43 CET | Original file | - |
