| article html file updated | 6 February 2020 04:07 CET | Update | https://www.mdpi.com/2072-6643/5/9/3447 |
| article html file updated | 8 May 2019 01:00 CEST | Update | - |
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| article html file updated | 17 June 2015 12:49 CEST | Update | - |
| article html file updated | 25 October 2013 09:51 CEST | Original file | - |
| article xml file uploaded | 25 October 2013 09:50 CEST | Original file | https://www.mdpi.com/2072-6643/5/9/3447/xml |
| article pdf uploaded. | 2 September 2013 11:06 CEST | Version of Record | https://www.mdpi.com/2072-6643/5/9/3447/pdf |
