| article html file updated | 17 September 2018 06:51 CEST | Update | https://www.mdpi.com/1420-3049/21/9/1221 |
| article html file updated | 29 September 2016 08:39 CEST | Update | - |
| article html file updated | 12 September 2016 12:04 CEST | Original file | - |
| article xml uploaded. | 12 September 2016 12:02 CEST | Original file | https://www.mdpi.com/1420-3049/21/9/1221/xml |
| article pdf uploaded. | 12 September 2016 12:02 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/9/1221/pdf |
