| article html file updated | 9 February 2020 11:35 CET | Update | https://www.mdpi.com/1996-1073/11/4/768 |
| article html file updated | 2 October 2019 01:18 CEST | Update | - |
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| article html file updated | 28 March 2018 11:18 CEST | Original file | - |
| article xml uploaded. | 28 March 2018 11:17 CEST | Update | https://www.mdpi.com/1996-1073/11/4/768/xml |
| article pdf uploaded. | 28 March 2018 11:17 CEST | Version of Record | https://www.mdpi.com/1996-1073/11/4/768/pdf |
