| article html file updated | 13 August 2026 07:49 CEST | Update | https://www.mdpi.com/2079-9276/3/4/672 |
| article html file updated | 6 February 2020 14:09 CET | Update | N/A |
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| article xml file uploaded | 18 December 2014 11:38 CET | Original file | https://www.mdpi.com/2079-9276/3/4/672/xml |
| article pdf uploaded. | 4 December 2014 08:12 CET | Updated version of record | https://www.mdpi.com/2079-9276/3/4/672/pdf |
| article pdf uploaded. | 3 December 2014 13:23 CET | Version of Record | https://www.mdpi.com/2079-9276/3/4/672/pdf-vor |
