| article html file updated | 30 August 2025 09:50 CEST | Update | https://www.mdpi.com/2218-273X/8/4/171 |
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| article pdf uploaded. | 17 December 2018 11:33 CET | Updated version of record | https://www.mdpi.com/2218-273X/8/4/171/pdf |
| article xml uploaded. | 17 December 2018 11:33 CET | Update | https://www.mdpi.com/2218-273X/8/4/171/xml |
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| article pdf uploaded. | 11 December 2018 14:09 CET | Updated version of record | https://www.mdpi.com/2218-273X/8/4/171/pdf-vor |
| article pdf uploaded. | 11 December 2018 13:55 CET | Version of Record | https://www.mdpi.com/2218-273X/8/4/171/pdf-vor |
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