| article html file updated | 14 August 2026 13:57 CEST | Update | https://www.mdpi.com/2071-1050/9/4/644 |
| article html file updated | 8 February 2020 03:57 CET | Update | N/A |
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| article xml uploaded. | 19 April 2017 15:24 CEST | Original file | https://www.mdpi.com/2071-1050/9/4/644/xml |
| article pdf uploaded. | 19 April 2017 15:24 CEST | Version of Record | https://www.mdpi.com/2071-1050/9/4/644/pdf |
