| article html file updated | 7 February 2020 17:48 CET | Update | https://www.mdpi.com/1422-8599/2016/4/M915 |
| article html file updated | 22 September 2019 05:15 CEST | Update | - |
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| article html file updated | 22 November 2016 07:54 CET | Update | - |
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| article pdf uploaded. | 22 November 2016 07:53 CET | Updated version of record | https://www.mdpi.com/1422-8599/2016/4/M915/pdf |
| article html file updated | 10 November 2016 09:15 CET | Original file | - |
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| article pdf uploaded. | 10 November 2016 09:14 CET | Version of Record | https://www.mdpi.com/1422-8599/2016/4/M915/pdf-vor |
