| article html file updated | 7 February 2020 19:53 CET | Update | https://www.mdpi.com/2075-4701/6/12/320 |
| article html file updated | 22 September 2019 12:52 CEST | Update | - |
| article html file updated | 4 May 2019 18:41 CEST | Update | - |
| article html file updated | 28 December 2016 11:25 CET | Update | - |
| article html file updated | 19 December 2016 11:46 CET | Original file | - |
| article xml uploaded. | 19 December 2016 11:37 CET | Original file | https://www.mdpi.com/2075-4701/6/12/320/xml |
| article pdf uploaded. | 19 December 2016 11:37 CET | Updated version of record | https://www.mdpi.com/2075-4701/6/12/320/pdf |
| article pdf uploaded. | 18 December 2016 04:02 CET | Version of Record | https://www.mdpi.com/2075-4701/6/12/320/pdf-vor |
