| article html file updated | 8 February 2020 10:52 CET | Update | https://www.mdpi.com/2220-9964/6/7/215 |
| article html file updated | 25 September 2019 22:00 CEST | Update | - |
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| article html file updated | 31 July 2017 07:31 CEST | Update | - |
| article html file updated | 13 July 2017 10:20 CEST | Original file | - |
| article xml uploaded. | 13 July 2017 10:19 CEST | Original file | https://www.mdpi.com/2220-9964/6/7/215/xml |
| article pdf uploaded. | 13 July 2017 10:19 CEST | Version of Record | https://www.mdpi.com/2220-9964/6/7/215/pdf |
