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| article html file updated | 26 December 2018 10:57 CET | Update | - |
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| article pdf uploaded. | 26 November 2018 10:50 CET | Updated version of record | https://www.mdpi.com/2227-9091/6/4/133/pdf |
| article xml uploaded. | 26 November 2018 10:50 CET | Update | https://www.mdpi.com/2227-9091/6/4/133/xml |
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| article pdf uploaded. | 16 November 2018 17:15 CET | Updated version of record | https://www.mdpi.com/2227-9091/6/4/133/pdf-vor |
| article pdf uploaded. | 16 November 2018 16:59 CET | Version of Record | https://www.mdpi.com/2227-9091/6/4/133/pdf-vor |
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