| article html file updated | 18 August 2016 09:04 CEST | Original file | https://www.mdpi.com/2409-515X/2/3/6 |
| article xml uploaded. | 18 August 2016 09:02 CEST | Original file | https://www.mdpi.com/2409-515X/2/3/6/xml |
| article pdf uploaded. | 18 August 2016 09:02 CEST | Version of Record | https://www.mdpi.com/2409-515X/2/3/6/pdf |
