| article html file updated | 14 August 2026 16:09 CEST | Update | https://www.mdpi.com/2227-9067/4/7/60 |
| article html file updated | 8 February 2020 11:52 CET | Update | N/A |
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| article xml uploaded. | 24 July 2017 14:24 CEST | Original file | https://www.mdpi.com/2227-9067/4/7/60/xml |
| article pdf uploaded. | 24 July 2017 14:24 CEST | Version of Record | https://www.mdpi.com/2227-9067/4/7/60/pdf |
