| article html file updated | 7 February 2020 03:26 CET | Update | https://www.mdpi.com/2075-4701/6/1/17 |
| article html file updated | 6 May 2019 02:34 CEST | Update | - |
| article html file updated | 26 March 2019 18:28 CET | Original file | - |
| article pdf uploaded. | 15 January 2016 12:13 CET | Version of Record | https://www.mdpi.com/2075-4701/6/1/17/pdf |
| article xml uploaded. | 15 January 2016 12:13 CET | Original file | https://www.mdpi.com/2075-4701/6/1/17/xml |
