| article html file updated | 17 June 2017 12:23 CEST | Original file | https://www.mdpi.com/2409-515X/3/2/13 |
| article xml uploaded. | 17 June 2017 12:22 CEST | Original file | https://www.mdpi.com/2409-515X/3/2/13/xml |
| article pdf uploaded. | 17 June 2017 12:22 CEST | Version of Record | https://www.mdpi.com/2409-515X/3/2/13/pdf |
