| article html file updated | 7 February 2020 04:14 CET | Update | https://www.mdpi.com/2076-3417/6/2/43 |
| article html file updated | 6 May 2019 01:03 CEST | Update | - |
| article html file updated | 26 March 2019 20:02 CET | Original file | - |
| article pdf uploaded. | 3 February 2016 11:53 CET | Version of Record | https://www.mdpi.com/2076-3417/6/2/43/pdf |
| article xml uploaded. | 3 February 2016 11:53 CET | Original file | https://www.mdpi.com/2076-3417/6/2/43/xml |
