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| article xml uploaded. | 17 February 2017 12:11 CET | Update | https://www.mdpi.com/1422-0067/18/2/409/xml |
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| article pdf uploaded. | 17 February 2017 12:11 CET | Updated version of record | https://www.mdpi.com/1422-0067/18/2/409/pdf |
| article pdf uploaded. | 14 February 2017 15:43 CET | Version of Record | https://www.mdpi.com/1422-0067/18/2/409/pdf-vor |
