| article html file updated | 30 August 2025 01:24 CEST | Update | https://www.mdpi.com/2075-471X/6/4/18 |
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| article xml uploaded. | 14 October 2017 11:29 CEST | Original file | https://www.mdpi.com/2075-471X/6/4/18/xml |
| article pdf uploaded. | 14 October 2017 11:29 CEST | Updated version of record | https://www.mdpi.com/2075-471X/6/4/18/pdf |
| article pdf uploaded. | 12 October 2017 17:11 CEST | Version of Record | https://www.mdpi.com/2075-471X/6/4/18/pdf-vor |
