| article html file updated | 8 February 2020 05:59 CET | Update | https://www.mdpi.com/2075-4663/5/2/30 |
| article html file updated | 24 September 2019 20:38 CEST | Update | N/A |
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| article html file updated | 29 June 2017 11:51 CEST | Update | N/A |
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| article xml uploaded. | 16 May 2017 16:55 CEST | Original file | https://www.mdpi.com/2075-4663/5/2/30/xml |
| article pdf uploaded. | 16 May 2017 16:55 CEST | Version of Record | https://www.mdpi.com/2075-4663/5/2/30/pdf |
