| article html file updated | 8 February 2020 02:13 CET | Update | https://www.mdpi.com/2072-6643/9/4/324 |
| article html file updated | 24 September 2019 00:05 CEST | Update | - |
| article html file updated | 4 May 2019 05:06 CEST | Update | - |
| article html file updated | 28 April 2017 11:55 CEST | Update | - |
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| article html file updated | 24 March 2017 22:37 CET | Update | - |
| article html file updated | 24 March 2017 13:04 CET | Original file | - |
| article xml uploaded. | 24 March 2017 13:03 CET | Original file | https://www.mdpi.com/2072-6643/9/4/324/xml |
| article pdf uploaded. | 24 March 2017 13:03 CET | Version of Record | https://www.mdpi.com/2072-6643/9/4/324/pdf |
