| article html file updated | 30 August 2025 01:22 CEST | Update | https://www.mdpi.com/2227-7080/5/4/64 |
| article html file updated | 16 July 2022 06:41 CEST | Update | N/A |
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| article pdf uploaded. | 12 October 2017 08:07 CEST | Updated version of record | https://www.mdpi.com/2227-7080/5/4/64/pdf |
| article pdf uploaded. | 6 October 2017 13:03 CEST | Version of Record | https://www.mdpi.com/2227-7080/5/4/64/pdf-vor |
