| article html file updated | 5 February 2020 13:14 CET | Update | https://www.mdpi.com/1422-8599/2010/1/M647 |
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| article supplementary file uploaded. | 14 April 2014 06:08 CEST | - | https://www.mdpi.com/1422-8599/2010/1/M647#supplementary |