| article html file updated | 31 August 2025 01:43 CEST | Update | https://www.mdpi.com/1424-8247/12/4/142 |
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| article xml uploaded. | 24 September 2019 11:06 CEST | Update | https://www.mdpi.com/1424-8247/12/4/142/xml |
| article pdf uploaded. | 24 September 2019 11:06 CEST | Updated version of record | https://www.mdpi.com/1424-8247/12/4/142/pdf |
| article pdf uploaded. | 20 September 2019 10:56 CEST | Version of Record | https://www.mdpi.com/1424-8247/12/4/142/pdf-vor |
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