| article html file updated | 6 February 2020 08:03 CET | Update | https://www.mdpi.com/2077-0383/3/1/310 |
| article html file updated | 7 May 2019 17:02 CEST | Update | N/A |
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| article pdf uploaded. | 20 March 2014 14:38 CET | Version of Record | https://www.mdpi.com/2077-0383/3/1/310/pdf |