| article html file updated | 12 August 2026 19:50 CEST | Update | https://www.mdpi.com/2225-1154/1/2/53 |
| article html file updated | 6 February 2020 03:35 CET | Update | N/A |
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| article pdf uploaded. | 2 August 2013 13:43 CEST | Version of Record | https://www.mdpi.com/2225-1154/1/2/53/pdf |
