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| article html file updated | 21 August 2025 21:00 CEST | Update | - |
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| article html file updated | 27 June 2019 03:08 CEST | Original file | - |
| article pdf uploaded. | 27 June 2019 03:06 CEST | Updated version of record | https://www.mdpi.com/2306-5729/4/2/69/pdf |
| article xml uploaded. | 27 June 2019 03:06 CEST | Update | https://www.mdpi.com/2306-5729/4/2/69/xml |
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| article supplementary file uploaded. | 14 May 2019 14:27 CEST | - | https://www.mdpi.com/2306-5729/4/2/69#supplementary |
| article pdf uploaded. | 14 May 2019 14:27 CEST | Version of Record | https://www.mdpi.com/2306-5729/4/2/69/pdf-vor |
| article xml file uploaded | 14 May 2019 14:27 CEST | Original file | - |
