| article html file updated | 7 February 2020 07:08 CET | Update | https://www.mdpi.com/2076-3417/6/4/106 |
| article html file updated | 5 May 2019 18:53 CEST | Update | - |
| article html file updated | 27 March 2019 01:39 CET | Update | - |
| article html file updated | 27 April 2016 11:24 CEST | Update | - |
| article html file updated | 12 April 2016 11:45 CEST | Original file | - |
| article xml uploaded. | 12 April 2016 11:44 CEST | Original file | https://www.mdpi.com/2076-3417/6/4/106/xml |
| article pdf uploaded. | 12 April 2016 11:44 CEST | Version of Record | https://www.mdpi.com/2076-3417/6/4/106/pdf |
