| article html file updated | 9 February 2020 10:03 CET | Update | https://www.mdpi.com/2227-9067/5/3/42 |
| article html file updated | 1 October 2019 16:27 CEST | Update | - |
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| article html file updated | 26 March 2018 13:08 CEST | Update | - |
| article html file updated | 16 March 2018 04:57 CET | Original file | - |
| article xml uploaded. | 16 March 2018 04:56 CET | Original file | https://www.mdpi.com/2227-9067/5/3/42/xml |
| article pdf uploaded. | 16 March 2018 04:56 CET | Version of Record | https://www.mdpi.com/2227-9067/5/3/42/pdf |
