| article html file updated | 8 February 2020 03:29 CET | Update | https://www.mdpi.com/2076-2615/7/4/31 |
| article html file updated | 24 September 2019 07:04 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:25 CEST | Update | N/A |
| article html file updated | 28 April 2017 05:00 CEST | Update | N/A |
| article html file updated | 13 April 2017 12:48 CEST | Original file | N/A |
| article xml uploaded. | 13 April 2017 12:47 CEST | Original file | https://www.mdpi.com/2076-2615/7/4/31/xml |
| article pdf uploaded. | 13 April 2017 12:47 CEST | Version of Record | https://www.mdpi.com/2076-2615/7/4/31/pdf |
