| article html file updated | 29 August 2025 22:08 CEST | Update | https://www.mdpi.com/2304-8158/4/3/477 |
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| article pdf uploaded. | 21 September 2015 09:30 CEST | Updated version of record | https://www.mdpi.com/2304-8158/4/3/477/pdf |
| article pdf uploaded. | 18 September 2015 15:43 CEST | Version of Record | https://www.mdpi.com/2304-8158/4/3/477/pdf-vor |
