| article html file updated | 13 August 2026 05:51 CEST | Update | https://www.mdpi.com/2225-1146/2/4/151 |
| article html file updated | 6 February 2020 13:05 CET | Update | N/A |
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| article html file updated | 25 March 2019 16:27 CET | Original file | N/A |
| article pdf uploaded. | 23 October 2014 16:42 CEST | Version of Record | https://www.mdpi.com/2225-1146/2/4/151/pdf |
