| article html file updated | 8 February 2020 03:15 CET | Update | https://www.mdpi.com/2076-2615/7/4/30 |
| article html file updated | 24 September 2019 05:54 CEST | Update | - |
| article html file updated | 4 May 2019 02:51 CEST | Update | - |
| article html file updated | 28 April 2017 05:01 CEST | Update | - |
| article html file updated | 12 April 2017 03:42 CEST | Update | - |
| article xml uploaded. | 12 April 2017 03:40 CEST | Update | https://www.mdpi.com/2076-2615/7/4/30/xml |
| article pdf uploaded. | 12 April 2017 03:40 CEST | Updated version of record | https://www.mdpi.com/2076-2615/7/4/30/pdf |
| article html file updated | 10 April 2017 15:35 CEST | Original file | - |
| article pdf uploaded. | 10 April 2017 15:34 CEST | Version of Record | https://www.mdpi.com/2076-2615/7/4/30/pdf-vor |
