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| article html file updated | 24 December 2025 14:23 CET | Update | N/A |
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| article html file updated | 23 April 2018 14:02 CEST | Original file | N/A |
| article pdf uploaded. | 23 April 2018 14:01 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/4/1021/pdf |
| article xml uploaded. | 23 April 2018 14:01 CEST | Update | https://www.mdpi.com/1996-1073/11/4/1021/xml |
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