| article html file updated | 30 August 2025 03:22 CEST | Update | https://www.mdpi.com/1999-4907/9/4/192 |
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| article pdf uploaded. | 18 April 2018 14:20 CEST | Updated version of record | https://www.mdpi.com/1999-4907/9/4/192/pdf |
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| article xml uploaded. | 11 April 2018 15:06 CEST | Update | https://www.mdpi.com/1999-4907/9/4/192/xml |
| article pdf uploaded. | 11 April 2018 15:06 CEST | Updated version of record | https://www.mdpi.com/1999-4907/9/4/192/pdf-vor |
| article pdf uploaded. | 7 April 2018 12:24 CEST | Version of Record | https://www.mdpi.com/1999-4907/9/4/192/pdf-vor |
