| article html file updated | 8 February 2020 06:21 CET | Update | https://www.mdpi.com/2226-4787/5/2/28 |
| article html file updated | 24 September 2019 22:32 CEST | Update | N/A |
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| article html file updated | 29 June 2017 12:46 CEST | Update | N/A |
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| article xml uploaded. | 20 May 2017 13:19 CEST | Original file | https://www.mdpi.com/2226-4787/5/2/28/xml |
| article pdf uploaded. | 20 May 2017 13:19 CEST | Version of Record | https://www.mdpi.com/2226-4787/5/2/28/pdf |
