| article html file updated | 6 February 2020 08:55 CET | Update | https://www.mdpi.com/2076-0817/3/2/390 |
| article html file updated | 7 May 2019 15:14 CEST | Update | - |
| article html file updated | 21 March 2019 16:16 CET | Update | - |
| article html file updated | 20 August 2015 05:00 CEST | Update | - |
| article html file updated | 26 August 2014 04:23 CEST | Original file | - |
| article xml file uploaded | 26 August 2014 04:23 CEST | Original file | https://www.mdpi.com/2076-0817/3/2/390/xml |
| article pdf uploaded. | 29 April 2014 11:52 CEST | Version of Record | https://www.mdpi.com/2076-0817/3/2/390/pdf |
