| article html file updated | 8 February 2020 00:53 CET | Update | https://www.mdpi.com/2076-3298/4/1/21 |
| article html file updated | 23 September 2019 16:31 CEST | Update | N/A |
| article html file updated | 4 May 2019 07:59 CEST | Update | N/A |
| article html file updated | 29 March 2017 10:29 CEST | Update | N/A |
| article html file updated | 14 March 2017 07:01 CET | Original file | N/A |
| article xml uploaded. | 14 March 2017 07:00 CET | Original file | https://www.mdpi.com/2076-3298/4/1/21/xml |
| article pdf uploaded. | 14 March 2017 07:00 CET | Updated version of record | https://www.mdpi.com/2076-3298/4/1/21/pdf |
| article pdf uploaded. | 6 March 2017 12:16 CET | Version of Record | https://www.mdpi.com/2076-3298/4/1/21/pdf-vor |
