| article html file updated | 6 February 2020 04:34 CET | Update | https://www.mdpi.com/2079-7737/2/4/1189 |
| article html file updated | 8 May 2019 00:02 CEST | Update | N/A |
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| article pdf uploaded. | 26 September 2013 10:04 CEST | Version of Record | https://www.mdpi.com/2079-7737/2/4/1189/pdf |