| article html file updated | 13 August 2026 16:14 CEST | Update | https://www.mdpi.com/2226-4310/2/1/118 |
| article html file updated | 6 February 2020 16:44 CET | Update | N/A |
| article html file updated | 6 May 2019 23:34 CEST | Update | N/A |
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| article html file updated | 21 August 2015 08:59 CEST | Original file | N/A |
| article pdf uploaded. | 18 March 2015 15:04 CET | Version of Record | https://www.mdpi.com/2226-4310/2/1/118/pdf |
