| article html file updated | 30 August 2025 01:49 CEST | Update | https://www.mdpi.com/2075-1729/7/4/48 |
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| article xml uploaded. | 28 November 2017 04:25 CET | Update | https://www.mdpi.com/2075-1729/7/4/48/xml |
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| article pdf uploaded. | 28 November 2017 04:25 CET | Updated version of record | https://www.mdpi.com/2075-1729/7/4/48/pdf |
| article pdf uploaded. | 27 November 2017 12:07 CET | Version of Record | https://www.mdpi.com/2075-1729/7/4/48/pdf-vor |
