| article html file updated | 14 August 2026 23:49 CEST | Update | https://www.mdpi.com/1422-0067/19/4/993 |
| article html file updated | 9 February 2020 11:21 CET | Update | N/A |
| article html file updated | 1 October 2019 23:57 CEST | Update | N/A |
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| article html file updated | 26 March 2018 17:32 CEST | Original file | N/A |
| article xml uploaded. | 26 March 2018 17:01 CEST | Original file | https://www.mdpi.com/1422-0067/19/4/993/xml |
| article pdf uploaded. | 26 March 2018 17:01 CEST | Version of Record | https://www.mdpi.com/1422-0067/19/4/993/pdf |
