| article html file updated | 8 February 2020 22:48 CET | Update | https://www.mdpi.com/1996-1073/10/12/1997 |
| article html file updated | 28 September 2019 21:41 CEST | Update | N/A |
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| article html file updated | 1 December 2017 13:23 CET | Original file | N/A |
| article xml uploaded. | 1 December 2017 13:22 CET | Original file | https://www.mdpi.com/1996-1073/10/12/1997/xml |
| article pdf uploaded. | 1 December 2017 13:22 CET | Version of Record | https://www.mdpi.com/1996-1073/10/12/1997/pdf |
