| article html file updated | 8 February 2020 00:35 CET | Update | https://www.mdpi.com/2079-6439/5/1/8 |
| article html file updated | 23 September 2019 14:42 CEST | Update | - |
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| article html file updated | 30 March 2017 03:40 CEST | Update | - |
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| article xml uploaded. | 2 March 2017 07:56 CET | Original file | https://www.mdpi.com/2079-6439/5/1/8/xml |
| article pdf uploaded. | 2 March 2017 07:56 CET | Version of Record | https://www.mdpi.com/2079-6439/5/1/8/pdf |
