| article html file updated | 9 February 2020 13:46 CET | Update | https://www.mdpi.com/2227-9091/6/2/36 |
| article html file updated | 2 October 2019 14:38 CEST | Update | - |
| article html file updated | 1 May 2019 03:36 CEST | Update | - |
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| article html file updated | 27 June 2018 09:52 CEST | Update | - |
| article html file updated | 13 April 2018 17:58 CEST | Original file | - |
| article xml uploaded. | 13 April 2018 17:57 CEST | Update | https://www.mdpi.com/2227-9091/6/2/36/xml |
| article pdf uploaded. | 13 April 2018 17:57 CEST | Version of Record | https://www.mdpi.com/2227-9091/6/2/36/pdf |
