| article html file updated | 7 February 2020 17:22 CET | Update | https://www.mdpi.com/2079-9284/3/4/38 |
| article html file updated | 4 May 2019 23:44 CEST | Update | - |
| article html file updated | 2 November 2016 11:15 CET | Original file | - |
| article xml uploaded. | 2 November 2016 11:13 CET | Update | https://www.mdpi.com/2079-9284/3/4/38/xml |
| article xml uploaded. | 2 November 2016 11:13 CET | Original file | - |
| article pdf uploaded. | 2 November 2016 11:13 CET | Version of Record | https://www.mdpi.com/2079-9284/3/4/38/pdf |
