| article html file updated | 7 February 2020 12:44 CET | Update | https://www.mdpi.com/2075-1729/6/3/30 |
| article html file updated | 5 May 2019 08:12 CEST | Update | - |
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| article html file updated | 29 September 2016 09:48 CEST | Update | - |
| article html file updated | 3 August 2016 08:18 CEST | Original file | - |
| article xml uploaded. | 3 August 2016 08:17 CEST | Update | https://www.mdpi.com/2075-1729/6/3/30/xml |
| article pdf uploaded. | 3 August 2016 08:17 CEST | Version of Record | https://www.mdpi.com/2075-1729/6/3/30/pdf |
