| article html file updated | 8 February 2020 05:27 CET | Update | https://www.mdpi.com/2227-9067/4/5/37 |
| article html file updated | 24 September 2019 17:48 CEST | Update | - |
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| article html file updated | 31 May 2017 06:35 CEST | Update | - |
| article html file updated | 23 May 2017 03:57 CEST | Update | - |
| article html file updated | 9 May 2017 15:41 CEST | Original file | - |
| article xml uploaded. | 9 May 2017 15:39 CEST | Original file | https://www.mdpi.com/2227-9067/4/5/37/xml |
| article pdf uploaded. | 9 May 2017 15:39 CEST | Version of Record | https://www.mdpi.com/2227-9067/4/5/37/pdf |
