| article html file updated | 8 February 2020 04:29 CET | Update | https://www.mdpi.com/2227-9717/5/2/23 |
| article html file updated | 24 September 2019 12:46 CEST | Update | - |
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| article html file updated | 29 June 2017 12:49 CEST | Update | - |
| article html file updated | 27 April 2017 08:26 CEST | Original file | - |
| article xml uploaded. | 27 April 2017 08:24 CEST | Original file | https://www.mdpi.com/2227-9717/5/2/23/xml |
| article pdf uploaded. | 27 April 2017 08:24 CEST | Version of Record | https://www.mdpi.com/2227-9717/5/2/23/pdf |
