| article html file updated | 8 February 2020 15:35 CET | Update | https://www.mdpi.com/2076-3298/4/3/60 |
| article html file updated | 27 September 2019 00:14 CEST | Update | - |
| article html file updated | 3 May 2019 03:05 CEST | Update | - |
| article html file updated | 30 September 2017 13:55 CEST | Update | - |
| article html file updated | 7 September 2017 14:22 CEST | Original file | - |
| article xml uploaded. | 7 September 2017 14:20 CEST | Original file | https://www.mdpi.com/2076-3298/4/3/60/xml |
| article pdf uploaded. | 7 September 2017 14:20 CEST | Version of Record | https://www.mdpi.com/2076-3298/4/3/60/pdf |
