| article html file updated | 7 February 2020 17:15 CET | Update | https://www.mdpi.com/2079-9284/3/4/37 |
| article html file updated | 4 May 2019 23:57 CEST | Update | - |
| article html file updated | 31 October 2016 10:23 CET | Original file | - |
| article xml uploaded. | 31 October 2016 10:22 CET | Update | https://www.mdpi.com/2079-9284/3/4/37/xml |
| article xml uploaded. | 31 October 2016 10:22 CET | Original file | - |
| article pdf uploaded. | 31 October 2016 10:22 CET | Version of Record | https://www.mdpi.com/2079-9284/3/4/37/pdf |
