| article html file updated | 8 February 2020 08:11 CET | Update | https://www.mdpi.com/2076-3298/4/2/42 |
| article html file updated | 25 September 2019 07:48 CEST | Update | - |
| article html file updated | 3 May 2019 17:40 CEST | Update | - |
| article html file updated | 29 June 2017 11:27 CEST | Update | - |
| article html file updated | 20 June 2017 11:13 CEST | Original file | - |
| article xml uploaded. | 20 June 2017 11:12 CEST | Update | https://www.mdpi.com/2076-3298/4/2/42/xml |
| article pdf uploaded. | 20 June 2017 11:12 CEST | Updated version of record | https://www.mdpi.com/2076-3298/4/2/42/pdf |
| article pdf uploaded. | 13 June 2017 13:16 CEST | Version of Record | https://www.mdpi.com/2076-3298/4/2/42/pdf-vor |
