| article html file updated | 8 February 2020 01:34 CET | Update | https://www.mdpi.com/2077-0472/7/3/30 |
| article html file updated | 23 September 2019 20:21 CEST | Update | - |
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| article html file updated | 28 March 2017 03:25 CEST | Update | - |
| article html file updated | 16 March 2017 09:41 CET | Original file | - |
| article xml uploaded. | 16 March 2017 09:40 CET | Original file | https://www.mdpi.com/2077-0472/7/3/30/xml |
| article pdf uploaded. | 16 March 2017 09:40 CET | Version of Record | https://www.mdpi.com/2077-0472/7/3/30/pdf |
