| article html file updated | 13 August 2026 21:49 CEST | Update | https://www.mdpi.com/2073-4344/5/2/871 |
| article html file updated | 6 February 2020 19:12 CET | Update | N/A |
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| article pdf uploaded. | 29 May 2015 15:50 CEST | Updated version of record | https://www.mdpi.com/2073-4344/5/2/871/pdf |
| article pdf uploaded. | 29 May 2015 14:32 CEST | Version of Record | https://www.mdpi.com/2073-4344/5/2/871/pdf-vor |
