| article html file updated | 6 February 2020 02:39 CET | Update | https://www.mdpi.com/2079-6374/3/2/211 |
| article html file updated | 8 May 2019 04:00 CEST | Update | - |
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| article html file updated | 17 June 2015 10:17 CEST | Update | - |
| article html file updated | 26 August 2014 03:59 CEST | Original file | - |
| article xml file uploaded | 26 August 2014 03:59 CEST | Original file | https://www.mdpi.com/2079-6374/3/2/211/xml |
| article pdf uploaded. | 17 June 2013 12:07 CEST | Version of Record | https://www.mdpi.com/2079-6374/3/2/211/pdf |
