| article html file updated | 4 June 2018 14:22 CEST | Original file | https://www.mdpi.com/2409-515X/4/2/17 |
| article pdf uploaded. | 4 June 2018 14:21 CEST | Version of Record | https://www.mdpi.com/2409-515X/4/2/17/pdf |
| article xml uploaded. | 4 June 2018 14:21 CEST | Update | https://www.mdpi.com/2409-515X/4/2/17/xml |
| article xml file uploaded | 4 June 2018 14:21 CEST | Original file | N/A |
