| article html file updated | 30 August 2025 09:05 CEST | Update | https://www.mdpi.com/2227-9059/6/4/109 |
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| article pdf uploaded. | 26 November 2018 11:18 CET | Updated version of record | https://www.mdpi.com/2227-9059/6/4/109/pdf |
| article xml uploaded. | 26 November 2018 11:18 CET | Update | https://www.mdpi.com/2227-9059/6/4/109/xml |
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| article pdf uploaded. | 21 November 2018 15:57 CET | Updated version of record | https://www.mdpi.com/2227-9059/6/4/109/pdf-vor |
| article pdf uploaded. | 21 November 2018 15:54 CET | Version of Record | https://www.mdpi.com/2227-9059/6/4/109/pdf-vor |
| article xml file uploaded | 21 November 2018 15:54 CET | Original file | - |
