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| article pdf uploaded. | 3 January 2019 06:06 CET | Updated version of record | https://www.mdpi.com/2073-4441/11/1/60/pdf |
| article xml uploaded. | 3 January 2019 06:06 CET | Update | https://www.mdpi.com/2073-4441/11/1/60/xml |
| article xml file uploaded | 3 January 2019 06:06 CET | Update | N/A |
| article html file updated | 31 December 2018 12:50 CET | Original file | N/A |
| article pdf uploaded. | 31 December 2018 12:48 CET | Version of Record | https://www.mdpi.com/2073-4441/11/1/60/pdf-vor |
| article xml uploaded. | 31 December 2018 12:48 CET | Update | N/A |
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