| article html file updated | 7 February 2020 01:19 CET | Update | https://www.mdpi.com/2305-6320/2/4/331 |
| article html file updated | 9 January 2020 14:47 CET | Original file | - |
| article xml uploaded. | 24 November 2015 11:49 CET | Original file | https://www.mdpi.com/2305-6320/2/4/331/xml |
| article pdf uploaded. | 24 November 2015 11:49 CET | Version of Record | https://www.mdpi.com/2305-6320/2/4/331/pdf |
