| article html file updated | 6 February 2020 20:06 CET | Update | https://www.mdpi.com/2076-0825/4/3/135 |
| article html file updated | 6 May 2019 16:55 CEST | Update | - |
| article html file updated | 26 March 2019 05:30 CET | Update | - |
| article html file updated | 6 November 2015 11:06 CET | Original file | - |
| article xml file uploaded | 6 November 2015 11:06 CET | Original file | https://www.mdpi.com/2076-0825/4/3/135/xml |
| article pdf uploaded. | 26 June 2015 13:34 CEST | Version of Record | https://www.mdpi.com/2076-0825/4/3/135/pdf |
