| article html file updated | 8 February 2020 06:37 CET | Update | https://www.mdpi.com/2306-5354/4/2/48 |
| article html file updated | 24 September 2019 23:51 CEST | Update | - |
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| article xml uploaded. | 24 May 2017 16:35 CEST | Original file | https://www.mdpi.com/2306-5354/4/2/48/xml |
| article pdf uploaded. | 24 May 2017 16:35 CEST | Version of Record | https://www.mdpi.com/2306-5354/4/2/48/pdf |
