| article html file updated | 7 February 2020 06:06 CET | Update | https://www.mdpi.com/2076-3298/3/1/8 |
| article html file updated | 5 May 2019 21:02 CEST | Update | - |
| article html file updated | 26 March 2019 23:49 CET | Update | - |
| article html file updated | 22 June 2016 06:44 CEST | Original file | - |
| article xml uploaded. | 18 March 2016 10:29 CET | Original file | https://www.mdpi.com/2076-3298/3/1/8/xml |
| article pdf uploaded. | 18 March 2016 10:29 CET | Version of Record | https://www.mdpi.com/2076-3298/3/1/8/pdf |
