| article html file updated | 14 August 2026 23:52 CEST | Update | https://www.mdpi.com/2071-1050/10/4/991 |
| article html file updated | 9 February 2020 11:31 CET | Update | N/A |
| article html file updated | 2 October 2019 00:57 CEST | Update | N/A |
| article html file updated | 1 May 2019 08:09 CEST | Update | N/A |
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| article html file updated | 28 March 2018 08:36 CEST | Original file | N/A |
| article xml uploaded. | 28 March 2018 08:35 CEST | Original file | https://www.mdpi.com/2071-1050/10/4/991/xml |
| article pdf uploaded. | 28 March 2018 08:35 CEST | Updated version of record | https://www.mdpi.com/2071-1050/10/4/991/pdf |
| article pdf uploaded. | 27 March 2018 17:56 CEST | Version of Record | https://www.mdpi.com/2071-1050/10/4/991/pdf-vor |
