| article html file updated | 8 February 2020 02:48 CET | Update | https://www.mdpi.com/2076-3298/4/2/30 |
| article html file updated | 24 September 2019 03:23 CEST | Update | - |
| article html file updated | 4 May 2019 03:50 CEST | Update | - |
| article html file updated | 29 June 2017 11:25 CEST | Update | - |
| article html file updated | 4 April 2017 09:34 CEST | Original file | - |
| article xml uploaded. | 4 April 2017 09:33 CEST | Update | https://www.mdpi.com/2076-3298/4/2/30/xml |
| article pdf uploaded. | 4 April 2017 09:33 CEST | Updated version of record | https://www.mdpi.com/2076-3298/4/2/30/pdf |
| article pdf uploaded. | 2 April 2017 09:14 CEST | Version of Record | https://www.mdpi.com/2076-3298/4/2/30/pdf-vor |
