| article html file updated | 7 February 2020 07:35 CET | Update | https://www.mdpi.com/2304-8158/5/2/30 |
| article html file updated | 5 May 2019 17:59 CEST | Update | - |
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| article xml uploaded. | 21 April 2016 08:33 CEST | Original file | https://www.mdpi.com/2304-8158/5/2/30/xml |
| article pdf uploaded. | 21 April 2016 08:33 CEST | Version of Record | https://www.mdpi.com/2304-8158/5/2/30/pdf |
