| article html file updated | 7 February 2020 23:26 CET | Update | https://www.mdpi.com/2306-5354/4/1/13 |
| article html file updated | 23 September 2019 08:11 CEST | Update | - |
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| article html file updated | 29 March 2017 06:09 CEST | Update | - |
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| article xml uploaded. | 15 February 2017 10:24 CET | Original file | https://www.mdpi.com/2306-5354/4/1/13/xml |
| article pdf uploaded. | 15 February 2017 10:24 CET | Version of Record | https://www.mdpi.com/2306-5354/4/1/13/pdf |
