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| article html file updated | 16 July 2022 06:57 CEST | Update | N/A |
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| article xml uploaded. | 25 October 2017 12:17 CEST | Update | https://www.mdpi.com/2076-3921/6/4/80/xml |
| article pdf uploaded. | 25 October 2017 12:17 CEST | Updated version of record | https://www.mdpi.com/2076-3921/6/4/80/pdf |
| article html file updated | 25 October 2017 09:22 CEST | Original file | N/A |
| article xml uploaded. | 25 October 2017 09:21 CEST | Update | N/A |
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| article pdf uploaded. | 25 October 2017 09:21 CEST | Updated version of record | https://www.mdpi.com/2076-3921/6/4/80/pdf-vor |
| article pdf uploaded. | 21 October 2017 12:28 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/4/80/pdf-vor |
