| article html file updated | 6 February 2020 11:19 CET | Update | https://www.mdpi.com/2076-3417/4/3/331 |
| article html file updated | 21 March 2019 22:41 CET | Update | - |
| article html file updated | 20 August 2015 14:51 CEST | Update | - |
| article html file updated | 9 March 2015 11:42 CET | Original file | - |
| article xml file uploaded | 9 March 2015 11:42 CET | Original file | https://www.mdpi.com/2076-3417/4/3/331/xml |
| article pdf uploaded. | 8 August 2014 12:15 CEST | Version of Record | https://www.mdpi.com/2076-3417/4/3/331/pdf |
