| article html file updated | 9 February 2020 01:17 CET | Update | https://www.mdpi.com/1424-8220/18/1/49 |
| article html file updated | 29 September 2019 12:06 CEST | Update | N/A |
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| article html file updated | 26 December 2017 15:11 CET | Original file | N/A |
| article xml uploaded. | 26 December 2017 15:10 CET | Original file | https://www.mdpi.com/1424-8220/18/1/49/xml |
| article pdf uploaded. | 26 December 2017 15:10 CET | Version of Record | https://www.mdpi.com/1424-8220/18/1/49/pdf |
