| article html file updated | 7 February 2020 13:48 CET | Update | https://www.mdpi.com/2227-7099/4/3/18 |
| article html file updated | 5 May 2019 06:15 CEST | Update | - |
| article html file updated | 27 March 2019 14:36 CET | Update | - |
| article html file updated | 29 September 2016 11:58 CEST | Update | - |
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| article xml uploaded. | 19 September 2016 04:39 CEST | Update | https://www.mdpi.com/2227-7099/4/3/18/xml |
| article html file updated | 24 August 2016 10:03 CEST | Original file | - |
| article xml uploaded. | 24 August 2016 10:02 CEST | Update | - |
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| article pdf uploaded. | 24 August 2016 10:02 CEST | Version of Record | https://www.mdpi.com/2227-7099/4/3/18/pdf |
