| article html file updated | 14 August 2026 20:12 CEST | Update | https://www.mdpi.com/2075-471X/6/4/32 |
| article html file updated | 9 February 2020 00:20 CET | Update | N/A |
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| article pdf uploaded. | 18 December 2017 11:32 CET | Updated version of record | https://www.mdpi.com/2075-471X/6/4/32/pdf |
| article pdf uploaded. | 16 December 2017 12:35 CET | Version of Record | https://www.mdpi.com/2075-471X/6/4/32/pdf-vor |
