| article html file updated | 7 February 2020 11:18 CET | Update | https://www.mdpi.com/2227-9091/4/3/23 |
| article html file updated | 5 May 2019 10:52 CEST | Update | - |
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| article html file updated | 29 September 2016 09:44 CEST | Update | - |
| article html file updated | 7 July 2016 07:50 CEST | Original file | - |
| article xml uploaded. | 7 July 2016 07:48 CEST | Original file | https://www.mdpi.com/2227-9091/4/3/23/xml |
| article pdf uploaded. | 7 July 2016 07:48 CEST | Version of Record | https://www.mdpi.com/2227-9091/4/3/23/pdf |
