| article html file updated | 29 August 2025 22:55 CEST | Update | https://www.mdpi.com/1996-1073/9/4/270 |
| article html file updated | 16 July 2022 02:07 CEST | Update | N/A |
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| article xml uploaded. | 6 April 2016 11:14 CEST | Original file | https://www.mdpi.com/1996-1073/9/4/270/xml |
| article pdf uploaded. | 6 April 2016 11:14 CEST | Version of Record | https://www.mdpi.com/1996-1073/9/4/270/pdf |
