| article html file updated | 8 February 2020 02:03 CET | Update | https://www.mdpi.com/1424-8220/17/4/662 |
| article html file updated | 23 September 2019 23:15 CEST | Update | - |
| article html file updated | 4 May 2019 05:26 CEST | Update | - |
| article html file updated | 29 April 2017 13:26 CEST | Update | - |
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| article html file updated | 23 March 2017 09:49 CET | Original file | - |
| article xml uploaded. | 23 March 2017 09:48 CET | Update | https://www.mdpi.com/1424-8220/17/4/662/xml |
| article pdf uploaded. | 23 March 2017 09:47 CET | Version of Record | https://www.mdpi.com/1424-8220/17/4/662/pdf |
