| article html file updated | 30 August 2025 09:28 CEST | Update | https://www.mdpi.com/2313-433X/4/12/142 |
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| article pdf uploaded. | 14 December 2018 12:31 CET | Updated version of record | https://www.mdpi.com/2313-433X/4/12/142/pdf |
| article xml uploaded. | 14 December 2018 12:31 CET | Update | https://www.mdpi.com/2313-433X/4/12/142/xml |
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| article pdf uploaded. | 2 December 2018 11:34 CET | Version of Record | https://www.mdpi.com/2313-433X/4/12/142/pdf-vor |
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