| article html file updated | 30 August 2025 00:23 CEST | Update | https://www.mdpi.com/2079-9292/6/1/15 |
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| article xml uploaded. | 17 February 2017 09:55 CET | Original file | https://www.mdpi.com/2079-9292/6/1/15/xml |
| article pdf uploaded. | 17 February 2017 09:55 CET | Updated version of record | https://www.mdpi.com/2079-9292/6/1/15/pdf |
| article pdf uploaded. | 10 February 2017 16:14 CET | Version of Record | https://www.mdpi.com/2079-9292/6/1/15/pdf-vor |
