| article html file updated | 30 August 2025 21:52 CEST | Update | https://www.mdpi.com/2223-7747/8/7/197 |
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| article pdf uploaded. | 30 June 2019 08:48 CEST | Version of Record | https://www.mdpi.com/2223-7747/8/7/197/pdf |
| article xml uploaded. | 30 June 2019 08:48 CEST | Update | https://www.mdpi.com/2223-7747/8/7/197/xml |
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