| article html file updated | 30 August 2025 03:21 CEST | Update | https://www.mdpi.com/2227-9091/6/2/33 |
| article html file updated | 16 July 2022 10:30 CEST | Update | N/A |
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| article xml uploaded. | 12 April 2018 15:41 CEST | Original file | https://www.mdpi.com/2227-9091/6/2/33/xml |
| article pdf uploaded. | 12 April 2018 15:41 CEST | Updated version of record | https://www.mdpi.com/2227-9091/6/2/33/pdf |
| article pdf uploaded. | 5 April 2018 18:26 CEST | Version of Record | https://www.mdpi.com/2227-9091/6/2/33/pdf-vor |
