| article html file updated | 8 February 2020 16:32 CET | Update | https://www.mdpi.com/1999-5903/9/3/52 |
| article html file updated | 27 September 2019 05:25 CEST | Update | - |
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| article html file updated | 30 September 2017 14:02 CEST | Update | - |
| article html file updated | 18 September 2017 15:33 CEST | Original file | - |
| article xml uploaded. | 18 September 2017 15:32 CEST | Original file | https://www.mdpi.com/1999-5903/9/3/52/xml |
| article pdf uploaded. | 18 September 2017 15:32 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/3/52/pdf |
