| article html file updated | 15 August 2026 02:54 CEST | Update | https://www.mdpi.com/2226-471X/3/2/20 |
| article html file updated | 9 February 2020 20:48 CET | Update | N/A |
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| article html file updated | 8 June 2018 12:39 CEST | Original file | N/A |
| article pdf uploaded. | 8 June 2018 12:38 CEST | Version of Record | https://www.mdpi.com/2226-471X/3/2/20/pdf |
| article xml uploaded. | 8 June 2018 12:38 CEST | Update | https://www.mdpi.com/2226-471X/3/2/20/xml |
| article xml file uploaded | 8 June 2018 12:38 CEST | Original file | N/A |
