| article html file updated | 11 February 2020 04:29 CET | Update | https://www.mdpi.com/1999-5903/11/1/3 |
| article html file updated | 12 October 2019 07:01 CEST | Update | - |
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| article html file updated | 21 December 2018 04:54 CET | Original file | - |
| article pdf uploaded. | 21 December 2018 04:53 CET | Version of Record | https://www.mdpi.com/1999-5903/11/1/3/pdf |
| article xml uploaded. | 21 December 2018 04:53 CET | Update | https://www.mdpi.com/1999-5903/11/1/3/xml |
| article xml file uploaded | 21 December 2018 04:53 CET | Original file | - |
