| article html file updated | 7 February 2020 15:56 CET | Update | https://www.mdpi.com/2306-5354/3/4/24 |
| article html file updated | 22 September 2019 02:14 CEST | Update | - |
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| article html file updated | 29 December 2016 06:07 CET | Update | - |
| article html file updated | 2 October 2016 13:11 CEST | Original file | - |
| article xml uploaded. | 2 October 2016 13:10 CEST | Update | https://www.mdpi.com/2306-5354/3/4/24/xml |
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| article pdf uploaded. | 2 October 2016 13:10 CEST | Version of Record | https://www.mdpi.com/2306-5354/3/4/24/pdf |
