| article html file updated | 8 February 2020 21:48 CET | Update | https://www.mdpi.com/2076-3921/6/4/94 |
| article html file updated | 29 September 2019 08:22 CEST | Update | N/A |
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| article html file updated | 21 November 2017 14:10 CET | Original file | N/A |
| article xml uploaded. | 21 November 2017 14:09 CET | Original file | https://www.mdpi.com/2076-3921/6/4/94/xml |
| article pdf uploaded. | 21 November 2017 14:09 CET | Version of Record | https://www.mdpi.com/2076-3921/6/4/94/pdf |
