| article html file updated | 8 February 2020 05:07 CET | Update | https://www.mdpi.com/2076-3921/6/2/29 |
| article html file updated | 24 September 2019 16:05 CEST | Update | N/A |
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| article html file updated | 28 June 2017 12:29 CEST | Update | N/A |
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| article html file updated | 5 May 2017 12:17 CEST | Original file | N/A |
| article xml uploaded. | 5 May 2017 12:15 CEST | Original file | https://www.mdpi.com/2076-3921/6/2/29/xml |
| article pdf uploaded. | 5 May 2017 12:15 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/2/29/pdf |
