| article html file updated | 8 February 2020 04:12 CET | Update | https://www.mdpi.com/2076-3417/7/4/426 |
| article html file updated | 24 September 2019 11:18 CEST | Update | - |
| article html file updated | 4 May 2019 01:04 CEST | Update | - |
| article html file updated | 28 April 2017 05:26 CEST | Update | - |
| article html file updated | 25 April 2017 12:16 CEST | Original file | - |
| article xml uploaded. | 25 April 2017 12:14 CEST | Original file | https://www.mdpi.com/2076-3417/7/4/426/xml |
| article pdf uploaded. | 25 April 2017 12:14 CEST | Updated version of record | https://www.mdpi.com/2076-3417/7/4/426/pdf |
| article pdf uploaded. | 22 April 2017 13:00 CEST | Version of Record | https://www.mdpi.com/2076-3417/7/4/426/pdf-vor |
