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| article html file updated | 5 June 2018 13:04 CEST | Original file | - |
| article pdf uploaded. | 5 June 2018 13:03 CEST | Updated version of record | https://www.mdpi.com/2076-2607/6/2/50/pdf |
| article xml uploaded. | 5 June 2018 13:03 CEST | Update | https://www.mdpi.com/2076-2607/6/2/50/xml |
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| article pdf uploaded. | 2 June 2018 13:45 CEST | Version of Record | https://www.mdpi.com/2076-2607/6/2/50/pdf-vor |
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