| article html file updated | 6 February 2020 06:23 CET | Update | https://new.mdpi.com/1660-4601/11/1/249 |
| article html file updated | 7 May 2019 20:30 CEST | Update | - |
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| article html file updated | 19 August 2015 14:51 CEST | Update | - |
| article html file updated | 17 February 2014 11:09 CET | Original file | - |
| article xml file uploaded | 17 February 2014 11:09 CET | Original file | https://new.mdpi.com/1660-4601/11/1/249/xml |
| article pdf uploaded. | 23 December 2013 14:10 CET | Version of Record | https://new.mdpi.com/1660-4601/11/1/249/pdf |
