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| article pdf uploaded. | 22 November 2019 01:58 CET | Updated version of record | https://www.mdpi.com/2220-9964/8/11/504/pdf |
| article xml uploaded. | 22 November 2019 01:58 CET | Update | https://www.mdpi.com/2220-9964/8/11/504/xml |
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| article html file updated | 8 November 2019 07:02 CET | Original file | - |
| article pdf uploaded. | 8 November 2019 07:00 CET | Version of Record | https://www.mdpi.com/2220-9964/8/11/504/pdf-vor |
| article xml uploaded. | 8 November 2019 07:00 CET | Update | - |
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