| article html file updated | 30 August 2025 14:59 CEST | Update | https://www.mdpi.com/2227-7102/9/2/103 |
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| article pdf uploaded. | 13 May 2019 07:42 CEST | Version of Record | https://www.mdpi.com/2227-7102/9/2/103/pdf |
| article xml uploaded. | 13 May 2019 07:42 CEST | Update | https://www.mdpi.com/2227-7102/9/2/103/xml |
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