| article html file updated | 30 August 2025 01:24 CEST | Update | https://www.mdpi.com/2311-5521/2/4/54 |
| article html file updated | 16 July 2022 06:45 CEST | Update | N/A |
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| article xml uploaded. | 20 October 2017 12:08 CEST | Update | https://www.mdpi.com/2311-5521/2/4/54/xml |
| article pdf uploaded. | 20 October 2017 12:08 CEST | Updated version of record | https://www.mdpi.com/2311-5521/2/4/54/pdf |
| article html file updated | 12 October 2017 15:15 CEST | Original file | N/A |
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| article pdf uploaded. | 12 October 2017 15:14 CEST | Version of Record | https://www.mdpi.com/2311-5521/2/4/54/pdf-vor |
