| article html file updated | 6 February 2020 05:13 CET | Update | https://www.mdpi.com/2075-4418/3/4/372 |
| article html file updated | 7 May 2019 22:43 CEST | Update | - |
| article html file updated | 21 March 2019 06:50 CET | Update | - |
| article html file updated | 17 June 2015 14:22 CEST | Update | - |
| article html file updated | 24 June 2014 12:05 CEST | Original file | - |
| article xml file uploaded | 24 June 2014 12:05 CEST | Original file | https://www.mdpi.com/2075-4418/3/4/372/xml |
| article pdf uploaded. | 29 October 2013 15:08 CET | Version of Record | https://www.mdpi.com/2075-4418/3/4/372/pdf |
