| article html file updated | 9 February 2020 00:24 CET | Update | https://www.mdpi.com/2079-6439/5/4/48 |
| article html file updated | 29 September 2019 07:10 CEST | Update | N/A |
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| article html file updated | 18 December 2017 14:08 CET | Original file | N/A |
| article xml uploaded. | 18 December 2017 14:07 CET | Update | https://www.mdpi.com/2079-6439/5/4/48/xml |
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| article pdf uploaded. | 18 December 2017 14:07 CET | Version of Record | https://www.mdpi.com/2079-6439/5/4/48/pdf |