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| article html file updated | 30 August 2025 13:41 CEST | Update | N/A |
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| article html file updated | 26 April 2019 11:44 CEST | Original file | N/A |
| article pdf uploaded. | 26 April 2019 11:43 CEST | Updated version of record | https://www.mdpi.com/2076-3271/7/4/56/pdf |
| article xml uploaded. | 26 April 2019 11:43 CEST | Update | https://www.mdpi.com/2076-3271/7/4/56/xml |
| article xml file uploaded | 26 April 2019 11:43 CEST | Update | N/A |
| article pdf uploaded. | 4 April 2019 16:24 CEST | Version of Record | https://www.mdpi.com/2076-3271/7/4/56/pdf-vor |
| article xml file uploaded | 4 April 2019 16:24 CEST | Original file | N/A |
