| article html file updated | 8 February 2020 02:09 CET | Update | https://www.mdpi.com/1424-8220/17/4/669 |
| article html file updated | 23 September 2019 23:45 CEST | Update | - |
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| article html file updated | 29 April 2017 13:28 CEST | Update | - |
| article html file updated | 28 March 2017 11:58 CEST | Update | - |
| article xml uploaded. | 28 March 2017 11:28 CEST | Update | https://www.mdpi.com/1424-8220/17/4/669/xml |
| article pdf uploaded. | 28 March 2017 11:27 CEST | Updated version of record | https://www.mdpi.com/1424-8220/17/4/669/pdf |
| article html file updated | 27 March 2017 05:30 CEST | Update | - |
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| article html file updated | 24 March 2017 10:04 CET | Original file | - |
| article pdf uploaded. | 24 March 2017 10:03 CET | Version of Record | https://www.mdpi.com/1424-8220/17/4/669/pdf-vor |
