| article html file updated | 6 February 2020 07:21 CET | Update | https://www.mdpi.com/2072-666X/5/1/81 |
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| article supplementary file uploaded. | 19 February 2014 16:34 CET | - | https://www.mdpi.com/2072-666X/5/1/81#supplementary |
| article pdf uploaded. | 19 February 2014 16:34 CET | Version of Record | https://www.mdpi.com/2072-666X/5/1/81/pdf |