| article html file updated | 14 August 2026 14:48 CEST | Update | https://www.mdpi.com/2072-6694/9/6/61 |
| article html file updated | 8 February 2020 06:59 CET | Update | N/A |
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| article pdf uploaded. | 1 June 2017 05:23 CEST | Updated version of record | https://www.mdpi.com/2072-6694/9/6/61/pdf |
| article pdf uploaded. | 30 May 2017 09:30 CEST | Version of Record | https://www.mdpi.com/2072-6694/9/6/61/pdf-vor |
