| article html file updated | 13 August 2026 18:41 CEST | Update | https://www.mdpi.com/1996-1944/8/4/1871 |
| article html file updated | 6 February 2020 17:52 CET | Update | N/A |
| article html file updated | 6 May 2019 21:33 CEST | Update | N/A |
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| article html file updated | 21 August 2015 10:54 CEST | Original file | N/A |
| article pdf uploaded. | 21 April 2015 13:18 CEST | Version of Record | https://www.mdpi.com/1996-1944/8/4/1871/pdf |
