| article html file updated | 31 August 2025 07:00 CEST | Update | https://www.mdpi.com/2227-7390/8/1/13 |
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| article pdf uploaded. | 24 December 2019 10:23 CET | Updated version of record | https://www.mdpi.com/2227-7390/8/1/13/pdf |
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| article pdf uploaded. | 19 December 2019 14:14 CET | Version of Record | https://www.mdpi.com/2227-7390/8/1/13/pdf-vor |
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