| article html file updated | 7 February 2020 07:11 CET | Update | https://www.mdpi.com/2223-7747/5/2/17 |
| article html file updated | 29 September 2019 08:05 CEST | Update | - |
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| article html file updated | 13 April 2016 08:45 CEST | Original file | - |
| article xml uploaded. | 13 April 2016 08:44 CEST | Original file | https://www.mdpi.com/2223-7747/5/2/17/xml |
| article pdf uploaded. | 13 April 2016 08:44 CEST | Version of Record | https://www.mdpi.com/2223-7747/5/2/17/pdf |
