| article html file updated | 8 February 2020 06:21 CET | Update | https://www.mdpi.com/2079-9292/6/2/41 |
| article html file updated | 24 September 2019 22:30 CEST | Update | - |
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| article html file updated | 28 June 2017 13:03 CEST | Update | - |
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| article html file updated | 20 May 2017 14:25 CEST | Original file | - |
| article xml uploaded. | 20 May 2017 14:24 CEST | Original file | https://www.mdpi.com/2079-9292/6/2/41/xml |
| article pdf uploaded. | 20 May 2017 14:24 CEST | Version of Record | https://www.mdpi.com/2079-9292/6/2/41/pdf |
