| article html file updated | 8 February 2020 06:32 CET | Update | https://www.mdpi.com/2306-5354/4/2/49 |
| article html file updated | 24 September 2019 23:29 CEST | Update | - |
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| article html file updated | 28 June 2017 12:38 CEST | Update | - |
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| article xml uploaded. | 24 May 2017 05:55 CEST | Original file | https://www.mdpi.com/2306-5354/4/2/49/xml |
| article pdf uploaded. | 24 May 2017 05:55 CEST | Version of Record | https://www.mdpi.com/2306-5354/4/2/49/pdf |
