| article html file updated | 7 February 2020 10:29 CET | Update | https://www.mdpi.com/2077-0375/6/2/35 |
| article html file updated | 5 May 2019 12:19 CEST | Update | - |
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| article html file updated | 4 July 2016 05:08 CEST | Update | - |
| article html file updated | 21 June 2016 12:07 CEST | Original file | - |
| article xml uploaded. | 21 June 2016 12:06 CEST | Original file | https://www.mdpi.com/2077-0375/6/2/35/xml |
| article pdf uploaded. | 21 June 2016 12:06 CEST | Version of Record | https://www.mdpi.com/2077-0375/6/2/35/pdf |
