| article html file updated | 8 February 2020 08:15 CET | Update | https://www.mdpi.com/2227-9032/5/2/28 |
| article html file updated | 25 September 2019 08:14 CEST | Update | - |
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| article html file updated | 30 June 2017 05:39 CEST | Update | - |
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| article xml uploaded. | 14 June 2017 14:26 CEST | Original file | https://www.mdpi.com/2227-9032/5/2/28/xml |
| article pdf uploaded. | 14 June 2017 14:26 CEST | Version of Record | https://www.mdpi.com/2227-9032/5/2/28/pdf |
