| article html file updated | 8 February 2020 07:26 CET | Update | https://www.mdpi.com/2076-3298/4/2/40 |
| article html file updated | 25 September 2019 03:59 CEST | Update | - |
| article html file updated | 3 May 2019 19:03 CEST | Update | - |
| article html file updated | 29 June 2017 11:26 CEST | Update | - |
| article html file updated | 5 June 2017 02:50 CEST | Original file | - |
| article xml uploaded. | 5 June 2017 02:49 CEST | Original file | https://www.mdpi.com/2076-3298/4/2/40/xml |
| article pdf uploaded. | 5 June 2017 02:49 CEST | Updated version of record | https://www.mdpi.com/2076-3298/4/2/40/pdf |
| article pdf uploaded. | 3 June 2017 12:36 CEST | Version of Record | https://www.mdpi.com/2076-3298/4/2/40/pdf-vor |
