| article html file updated | 7 February 2020 21:13 CET | Update | https://www.mdpi.com/2225-1154/5/1/3 |
| article html file updated | 4 May 2019 15:52 CEST | Update | N/A |
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| article html file updated | 11 January 2017 10:12 CET | Update | N/A |
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| article xml uploaded. | 11 January 2017 10:11 CET | Original file | https://www.mdpi.com/2225-1154/5/1/3/xml |
| article pdf uploaded. | 11 January 2017 10:11 CET | Version of Record | https://www.mdpi.com/2225-1154/5/1/3/pdf |
