| article html file updated | 7 February 2020 04:29 CET | Update | https://www.mdpi.com/2076-3417/6/2/49 |
| article html file updated | 6 May 2019 00:31 CEST | Update | - |
| article html file updated | 26 March 2019 20:34 CET | Original file | - |
| article pdf uploaded. | 9 February 2016 09:16 CET | Version of Record | https://www.mdpi.com/2076-3417/6/2/49/pdf |
| article xml uploaded. | 9 February 2016 09:16 CET | Original file | https://www.mdpi.com/2076-3417/6/2/49/xml |
