| article html file updated | 9 February 2020 08:40 CET | Update | https://www.mdpi.com/2306-5354/5/1/21 |
| article html file updated | 1 October 2019 07:03 CEST | Update | - |
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| article xml uploaded. | 5 March 2018 15:03 CET | Original file | https://www.mdpi.com/2306-5354/5/1/21/xml |
| article pdf uploaded. | 5 March 2018 15:03 CET | Version of Record | https://www.mdpi.com/2306-5354/5/1/21/pdf |
