| article html file updated | 7 February 2020 09:56 CET | Update | https://www.mdpi.com/2220-9964/5/6/89 |
| article html file updated | 5 May 2019 13:23 CEST | Update | - |
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| article html file updated | 29 June 2016 05:46 CEST | Update | - |
| article html file updated | 8 June 2016 15:14 CEST | Original file | - |
| article xml uploaded. | 8 June 2016 15:12 CEST | Original file | https://www.mdpi.com/2220-9964/5/6/89/xml |
| article pdf uploaded. | 8 June 2016 15:12 CEST | Version of Record | https://www.mdpi.com/2220-9964/5/6/89/pdf |
