| article html file updated | 7 February 2020 03:21 CET | Update | https://www.mdpi.com/2076-3417/6/1/17 |
| article html file updated | 6 May 2019 02:44 CEST | Update | - |
| article html file updated | 26 March 2019 18:18 CET | Original file | - |
| article pdf uploaded. | 13 January 2016 08:23 CET | Version of Record | https://www.mdpi.com/2076-3417/6/1/17/pdf |
| article xml uploaded. | 13 January 2016 08:23 CET | Original file | https://www.mdpi.com/2076-3417/6/1/17/xml |
