| article html file updated | 7 February 2020 10:33 CET | Update | https://www.mdpi.com/2079-8954/4/2/25 |
| article html file updated | 5 May 2019 12:13 CEST | Update | - |
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| article html file updated | 4 July 2016 11:08 CEST | Update | - |
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| article xml uploaded. | 22 June 2016 09:06 CEST | Update | https://www.mdpi.com/2079-8954/4/2/25/xml |
| article pdf uploaded. | 22 June 2016 09:05 CEST | Version of Record | https://www.mdpi.com/2079-8954/4/2/25/pdf |
