| article html file updated | 20 July 2016 09:20 CEST | Original file | https://www.mdpi.com/2409-515X/2/3/4 |
| article xml uploaded. | 20 July 2016 09:19 CEST | Original file | https://www.mdpi.com/2409-515X/2/3/4/xml |
| article pdf uploaded. | 20 July 2016 09:19 CEST | Version of Record | https://www.mdpi.com/2409-515X/2/3/4/pdf |
