| article html file updated | 8 February 2020 02:10 CET | Update | https://www.mdpi.com/1424-8220/17/4/671 |
| article html file updated | 23 September 2019 23:52 CEST | Update | - |
| article html file updated | 4 May 2019 05:12 CEST | Update | - |
| article html file updated | 29 April 2017 13:28 CEST | Update | - |
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| article html file updated | 24 March 2017 22:34 CET | Update | - |
| article html file updated | 24 March 2017 13:49 CET | Original file | - |
| article xml uploaded. | 24 March 2017 13:48 CET | Original file | https://www.mdpi.com/1424-8220/17/4/671/xml |
| article pdf uploaded. | 24 March 2017 13:48 CET | Version of Record | https://www.mdpi.com/1424-8220/17/4/671/pdf |
