| article html file updated | 7 February 2020 13:57 CET | Update | https://www.mdpi.com/2221-3759/4/3/25 |
| article html file updated | 5 May 2019 05:58 CEST | Update | - |
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| article html file updated | 29 September 2016 12:02 CEST | Update | - |
| article html file updated | 26 August 2016 12:14 CEST | Original file | - |
| article xml uploaded. | 26 August 2016 12:12 CEST | Original file | https://www.mdpi.com/2221-3759/4/3/25/xml |
| article pdf uploaded. | 26 August 2016 12:12 CEST | Version of Record | https://www.mdpi.com/2221-3759/4/3/25/pdf |
