| article html file updated | 9 February 2020 03:59 CET | Update | https://www.mdpi.com/2227-9067/5/2/14 |
| article html file updated | 30 September 2019 03:26 CEST | Update | - |
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| article html file updated | 14 March 2018 08:34 CET | Update | - |
| article html file updated | 23 January 2018 16:56 CET | Original file | - |
| article xml uploaded. | 23 January 2018 16:54 CET | Original file | https://www.mdpi.com/2227-9067/5/2/14/xml |
| article pdf uploaded. | 23 January 2018 16:54 CET | Version of Record | https://www.mdpi.com/2227-9067/5/2/14/pdf |
