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| article html file updated | 8 June 2018 11:55 CEST | Original file | N/A |
| article supplementary file uploaded. | 8 June 2018 11:54 CEST | - | https://www.mdpi.com/2221-3759/6/2/12#supplementary |
| article pdf uploaded. | 8 June 2018 11:54 CEST | Version of Record | https://www.mdpi.com/2221-3759/6/2/12/pdf |
| article xml uploaded. | 8 June 2018 11:54 CEST | Update | https://www.mdpi.com/2221-3759/6/2/12/xml |
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