| article html file updated | 29 August 2025 21:17 CEST | Update | https://www.mdpi.com/2227-9717/2/4/753 |
| article html file updated | 15 July 2022 23:28 CEST | Update | N/A |
| article html file updated | 6 February 2020 12:54 CET | Update | N/A |
| article html file updated | 7 May 2019 06:58 CEST | Update | N/A |
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| article html file updated | 20 August 2015 23:27 CEST | Original file | N/A |
| article pdf uploaded. | 17 October 2014 09:01 CEST | Version of Record | https://www.mdpi.com/2227-9717/2/4/753/pdf |
