| article html file updated | 7 February 2020 07:07 CET | Update | https://www.mdpi.com/2076-3417/6/4/107 |
| article html file updated | 5 May 2019 18:55 CEST | Update | - |
| article html file updated | 27 March 2019 01:36 CET | Update | - |
| article html file updated | 27 April 2016 11:26 CEST | Update | - |
| article html file updated | 12 April 2016 08:59 CEST | Original file | - |
| article xml uploaded. | 12 April 2016 08:57 CEST | Update | https://www.mdpi.com/2076-3417/6/4/107/xml |
| article pdf uploaded. | 12 April 2016 08:57 CEST | Version of Record | https://www.mdpi.com/2076-3417/6/4/107/pdf |
