| article html file updated | 7 February 2020 01:17 CET | Update | https://www.mdpi.com/1422-8599/2015/4/M877 |
| article html file updated | 21 September 2019 06:38 CEST | Update | N/A |
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| article xml uploaded. | 22 September 2017 09:07 CEST | Original file | https://www.mdpi.com/1422-8599/2015/4/M877/xml |
| article html file updated | 24 November 2016 22:44 CET | Original file | N/A |
| article pdf uploaded. | 9 December 2015 13:43 CET | Updated version of record | https://www.mdpi.com/1422-8599/2015/4/M877/pdf |
| article pdf uploaded. | 23 November 2015 14:50 CET | Version of Record | https://www.mdpi.com/1422-8599/2015/4/M877/pdf-vor |
