| article html file updated | 7 February 2020 19:34 CET | Update | https://www.mdpi.com/2079-9276/5/4/46 |
| article html file updated | 22 September 2019 11:14 CEST | Update | - |
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| article html file updated | 30 December 2016 09:15 CET | Update | - |
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| article xml uploaded. | 14 December 2016 06:37 CET | Original file | https://www.mdpi.com/2079-9276/5/4/46/xml |
| article pdf uploaded. | 14 December 2016 06:37 CET | Version of Record | https://www.mdpi.com/2079-9276/5/4/46/pdf |
