| article html file updated | 6 February 2020 14:20 CET | Update | https://www.mdpi.com/1420-3049/19/12/20613 |
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| article xml file uploaded | 4 January 2015 11:50 CET | Original file | https://www.mdpi.com/1420-3049/19/12/20613/xml |
| article pdf uploaded. | 10 December 2014 11:27 CET | Version of Record | https://www.mdpi.com/1420-3049/19/12/20613/pdf |