| article html file updated | 13 August 2026 21:15 CEST | Update | https://www.mdpi.com/2077-1312/3/2/276 |
| article html file updated | 6 February 2020 18:57 CET | Update | N/A |
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| article pdf uploaded. | 26 May 2015 09:43 CEST | Updated version of record | https://www.mdpi.com/2077-1312/3/2/276/pdf |
| article pdf uploaded. | 26 May 2015 09:34 CEST | Version of Record | https://www.mdpi.com/2077-1312/3/2/276/pdf-vor |
