| article html file updated | 7 February 2020 03:21 CET | Update | https://www.mdpi.com/2071-1050/8/1/72 |
| article html file updated | 6 May 2019 02:45 CEST | Update | - |
| article html file updated | 26 March 2019 18:17 CET | Original file | - |
| article pdf uploaded. | 18 January 2016 13:56 CET | Updated version of record | https://www.mdpi.com/2071-1050/8/1/72/pdf |
| article xml uploaded. | 18 January 2016 13:56 CET | Update | https://www.mdpi.com/2071-1050/8/1/72/xml |
| article pdf uploaded. | 13 January 2016 07:58 CET | Version of Record | https://www.mdpi.com/2071-1050/8/1/72/pdf-vor |
| article xml uploaded. | 13 January 2016 07:58 CET | Original file | - |
