| article html file updated | 30 August 2025 02:11 CEST | Update | https://www.mdpi.com/1996-1073/11/1/140 |
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| article xml uploaded. | 8 January 2018 09:54 CET | Update | https://www.mdpi.com/1996-1073/11/1/140/xml |
| article pdf uploaded. | 8 January 2018 09:54 CET | Updated version of record | https://www.mdpi.com/1996-1073/11/1/140/pdf |
| article pdf uploaded. | 6 January 2018 12:04 CET | Updated version of record | https://www.mdpi.com/1996-1073/11/1/140/pdf-vor |
| article pdf uploaded. | 6 January 2018 11:49 CET | Version of Record | https://www.mdpi.com/1996-1073/11/1/140/pdf-vor |