| article html file updated | 12 August 2026 22:41 CEST | Update | https://www.mdpi.com/2227-9717/2/1/216 |
| article html file updated | 6 February 2020 07:33 CET | Update | N/A |
| article html file updated | 7 May 2019 18:03 CEST | Update | N/A |
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| article html file updated | 15 February 2017 11:20 CET | Original file | N/A |
| article pdf uploaded. | 26 February 2014 15:24 CET | Updated version of record | https://www.mdpi.com/2227-9717/2/1/216/pdf |
| article pdf uploaded. | 26 February 2014 15:22 CET | Version of Record | N/A |
