| article html file updated | 8 February 2020 01:53 CET | Update | https://www.mdpi.com/2218-273X/7/1/32 |
| article html file updated | 23 September 2019 22:15 CEST | Update | - |
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| article html file updated | 14 March 2018 17:58 CET | Update | - |
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| article html file updated | 22 March 2017 10:56 CET | Original file | - |
| article xml uploaded. | 22 March 2017 10:55 CET | Original file | https://www.mdpi.com/2218-273X/7/1/32/xml |
| article pdf uploaded. | 22 March 2017 10:55 CET | Updated version of record | https://www.mdpi.com/2218-273X/7/1/32/pdf |
| article pdf uploaded. | 21 March 2017 10:50 CET | Version of Record | https://www.mdpi.com/2218-273X/7/1/32/pdf-vor |