| article html file updated | 7 February 2020 04:23 CET | Update | https://www.mdpi.com/1996-1944/9/2/96 |
| article html file updated | 6 May 2019 00:46 CEST | Update | - |
| article html file updated | 26 March 2019 20:20 CET | Original file | - |
| article pdf uploaded. | 6 February 2016 04:36 CET | Version of Record | https://www.mdpi.com/1996-1944/9/2/96/pdf |
| article xml uploaded. | 6 February 2016 04:36 CET | Original file | https://www.mdpi.com/1996-1944/9/2/96/xml |
