| article html file updated | 8 February 2020 08:05 CET | Update | https://www.mdpi.com/2227-7099/5/2/20 |
| article html file updated | 25 September 2019 07:19 CEST | Update | - |
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| article html file updated | 29 June 2017 11:23 CEST | Update | - |
| article html file updated | 12 June 2017 12:05 CEST | Original file | - |
| article xml uploaded. | 12 June 2017 12:04 CEST | Original file | https://www.mdpi.com/2227-7099/5/2/20/xml |
| article pdf uploaded. | 12 June 2017 12:04 CEST | Version of Record | https://www.mdpi.com/2227-7099/5/2/20/pdf |
