| article html file updated | 7 February 2020 19:12 CET | Update | https://www.mdpi.com/2079-9292/5/4/87 |
| article html file updated | 22 September 2019 09:15 CEST | Update | - |
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| article html file updated | 29 December 2016 11:08 CET | Update | - |
| article html file updated | 7 December 2016 09:50 CET | Original file | - |
| article xml uploaded. | 7 December 2016 09:49 CET | Original file | https://www.mdpi.com/2079-9292/5/4/87/xml |
| article pdf uploaded. | 7 December 2016 09:49 CET | Version of Record | https://www.mdpi.com/2079-9292/5/4/87/pdf |
