| article html file updated | 8 February 2020 05:49 CET | Update | https://www.mdpi.com/2076-0787/6/2/29 |
| article html file updated | 3 May 2019 22:07 CEST | Update | - |
| article html file updated | 23 May 2017 04:12 CEST | Update | - |
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| article xml uploaded. | 17 May 2017 09:16 CEST | Update | https://www.mdpi.com/2076-0787/6/2/29/xml |
| article pdf uploaded. | 17 May 2017 09:16 CEST | Updated version of record | https://www.mdpi.com/2076-0787/6/2/29/pdf |
| article html file updated | 13 May 2017 12:31 CEST | Original file | - |
| article pdf uploaded. | 13 May 2017 12:29 CEST | Version of Record | https://www.mdpi.com/2076-0787/6/2/29/pdf-vor |
