| article html file updated | 9 February 2020 01:45 CET | Update | https://www.mdpi.com/2227-9067/5/1/7 |
| article html file updated | 29 September 2019 14:52 CEST | Update | - |
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| article html file updated | 1 February 2018 07:50 CET | Update | - |
| article pdf uploaded. | 23 January 2018 04:42 CET | Updated version of record | https://www.mdpi.com/2227-9067/5/1/7/pdf |
| article html file updated | 2 January 2018 20:14 CET | Original file | - |
| article xml uploaded. | 2 January 2018 10:02 CET | Update | https://www.mdpi.com/2227-9067/5/1/7/xml |
| article pdf uploaded. | 2 January 2018 10:02 CET | Version of Record | https://www.mdpi.com/2227-9067/5/1/7/pdf-vor |
