| article html file updated | 8 February 2020 22:51 CET | Update | https://www.mdpi.com/2297-8739/4/4/36 |
| article html file updated | 28 September 2019 22:01 CEST | Update | N/A |
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| article xml uploaded. | 1 December 2017 17:10 CET | Original file | https://www.mdpi.com/2297-8739/4/4/36/xml |
| article pdf uploaded. | 1 December 2017 17:10 CET | Version of Record | https://www.mdpi.com/2297-8739/4/4/36/pdf |
