| article html file updated | 8 February 2020 05:34 CET | Update | https://www.mdpi.com/2218-1997/3/2/41 |
| article html file updated | 24 September 2019 18:24 CEST | Update | - |
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| article html file updated | 11 May 2017 08:35 CEST | Original file | - |
| article xml uploaded. | 11 May 2017 08:33 CEST | Original file | https://www.mdpi.com/2218-1997/3/2/41/xml |
| article pdf uploaded. | 11 May 2017 08:33 CEST | Version of Record | https://www.mdpi.com/2218-1997/3/2/41/pdf |
