| article html file updated | 7 February 2020 12:48 CET | Update | https://www.mdpi.com/2227-9032/4/3/52 |
| article html file updated | 5 May 2019 08:04 CEST | Update | - |
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| article html file updated | 29 September 2016 12:13 CEST | Update | - |
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| article xml uploaded. | 4 August 2016 14:32 CEST | Original file | https://www.mdpi.com/2227-9032/4/3/52/xml |
| article pdf uploaded. | 4 August 2016 14:32 CEST | Version of Record | https://www.mdpi.com/2227-9032/4/3/52/pdf |
