| article html file updated | 13 August 2026 17:53 CEST | Update | https://www.mdpi.com/2075-1680/4/2/156 |
| article html file updated | 6 February 2020 17:29 CET | Update | N/A |
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| article pdf uploaded. | 10 April 2015 09:20 CEST | Version of Record | https://www.mdpi.com/2075-1680/4/2/156/pdf |
