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| article pdf uploaded. | 24 December 2019 12:30 CET | Updated version of record | https://www.mdpi.com/2218-1989/10/1/2/pdf |
| article xml uploaded. | 24 December 2019 12:30 CET | Update | https://www.mdpi.com/2218-1989/10/1/2/xml |
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| article html file updated | 18 December 2019 10:22 CET | Original file | - |
| article supplementary file uploaded. | 18 December 2019 10:19 CET | - | https://www.mdpi.com/2218-1989/10/1/2#supplementary |
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| article xml uploaded. | 18 December 2019 10:19 CET | Update | - |
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