| article html file updated | 7 February 2020 18:51 CET | Update | https://www.mdpi.com/2309-608X/2/4/29 |
| article html file updated | 22 September 2019 07:54 CEST | Update | - |
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| article html file updated | 11 December 2018 09:33 CET | Update | - |
| article html file updated | 30 November 2016 11:28 CET | Original file | - |
| article xml uploaded. | 30 November 2016 11:26 CET | Original file | https://www.mdpi.com/2309-608X/2/4/29/xml |
| article pdf uploaded. | 30 November 2016 11:26 CET | Version of Record | https://www.mdpi.com/2309-608X/2/4/29/pdf |
