| article html file updated | 8 February 2020 08:26 CET | Update | https://www.mdpi.com/2227-9059/5/2/31 |
| article html file updated | 25 September 2019 09:14 CEST | Update | - |
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| article html file updated | 29 June 2017 12:38 CEST | Update | - |
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| article html file updated | 16 June 2017 08:51 CEST | Original file | - |
| article xml uploaded. | 16 June 2017 08:50 CEST | Original file | https://www.mdpi.com/2227-9059/5/2/31/xml |
| article pdf uploaded. | 16 June 2017 08:50 CEST | Version of Record | https://www.mdpi.com/2227-9059/5/2/31/pdf |
