| article html file updated | 8 February 2020 05:32 CET | Update | https://www.mdpi.com/2218-1997/3/2/45 |
| article html file updated | 3 May 2019 22:39 CEST | Update | - |
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| article xml uploaded. | 10 May 2017 13:06 CEST | Original file | https://www.mdpi.com/2218-1997/3/2/45/xml |
| article pdf uploaded. | 10 May 2017 13:06 CEST | Version of Record | https://www.mdpi.com/2218-1997/3/2/45/pdf |
