| article html file updated | 7 February 2020 05:46 CET | Update | https://www.mdpi.com/2227-9040/4/1/5 |
| article html file updated | 5 May 2019 21:43 CEST | Update | - |
| article html file updated | 26 March 2019 23:14 CET | Update | - |
| article html file updated | 29 March 2016 07:14 CEST | Original file | - |
| article pdf uploaded. | 11 March 2016 14:22 CET | Version of Record | https://www.mdpi.com/2227-9040/4/1/5/pdf |
| article xml uploaded. | 11 March 2016 14:22 CET | Original file | https://www.mdpi.com/2227-9040/4/1/5/xml |
