| article html file updated | 8 February 2020 03:31 CET | Update | https://www.mdpi.com/2073-4395/7/2/28 |
| article html file updated | 24 September 2019 07:16 CEST | Update | - |
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| article html file updated | 28 June 2017 12:21 CEST | Update | - |
| article html file updated | 19 April 2017 11:36 CEST | Update | - |
| article xml uploaded. | 19 April 2017 11:34 CEST | Update | https://www.mdpi.com/2073-4395/7/2/28/xml |
| article html file updated | 19 April 2017 11:17 CEST | Update | - |
| article pdf uploaded. | 19 April 2017 11:16 CEST | Updated version of record | https://www.mdpi.com/2073-4395/7/2/28/pdf |
| article html file updated | 13 April 2017 11:49 CEST | Update | - |
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| article html file updated | 13 April 2017 11:48 CEST | Original file | - |
| article pdf uploaded. | 13 April 2017 11:47 CEST | Version of Record | https://www.mdpi.com/2073-4395/7/2/28/pdf-vor |
