| article html file updated | 12 August 2026 23:37 CEST | Update | https://www.mdpi.com/2076-328X/4/2/87 |
| article html file updated | 29 August 2025 21:01 CEST | Update | N/A |
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| article html file updated | 26 August 2014 03:58 CEST | Original file | N/A |
| article xml file uploaded | 26 August 2014 03:58 CEST | Original file | https://www.mdpi.com/2076-328X/4/2/87/xml |
| article pdf uploaded. | 17 April 2014 09:50 CEST | Updated version of record | https://www.mdpi.com/2076-328X/4/2/87/pdf |
| article pdf uploaded. | 10 April 2014 09:22 CEST | Version of Record | https://www.mdpi.com/2076-328X/4/2/87/pdf-vor |
