| article html file updated | 8 February 2020 05:23 CET | Update | https://www.mdpi.com/2079-7737/6/2/30 |
| article html file updated | 24 September 2019 17:28 CEST | Update | - |
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| article html file updated | 28 June 2017 12:41 CEST | Update | - |
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| article xml uploaded. | 22 May 2017 07:07 CEST | Update | https://www.mdpi.com/2079-7737/6/2/30/xml |
| article pdf uploaded. | 22 May 2017 07:07 CEST | Updated version of record | https://www.mdpi.com/2079-7737/6/2/30/pdf |
| article html file updated | 9 May 2017 14:55 CEST | Original file | - |
| article pdf uploaded. | 9 May 2017 14:54 CEST | Version of Record | https://www.mdpi.com/2079-7737/6/2/30/pdf-vor |
