| article html file updated | 30 August 2025 03:13 CEST | Update | https://www.mdpi.com/2071-1050/10/4/989 |
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| article xml uploaded. | 30 March 2018 12:16 CEST | Original file | https://www.mdpi.com/2071-1050/10/4/989/xml |
| article pdf uploaded. | 30 March 2018 12:16 CEST | Updated version of record | https://www.mdpi.com/2071-1050/10/4/989/pdf |
| article pdf uploaded. | 27 March 2018 17:50 CEST | Version of Record | https://www.mdpi.com/2071-1050/10/4/989/pdf-vor |
