| article html file updated | 9 February 2020 01:07 CET | Update | https://www.mdpi.com/2076-3417/8/1/21 |
| article html file updated | 29 September 2019 11:12 CEST | Update | N/A |
| article html file updated | 2 May 2019 06:19 CEST | Update | N/A |
| article html file updated | 18 April 2019 04:16 CEST | Update | N/A |
| article html file updated | 28 March 2019 10:57 CET | Update | N/A |
| article html file updated | 1 February 2018 09:55 CET | Update | N/A |
| article html file updated | 25 December 2017 07:40 CET | Original file | N/A |
| article xml uploaded. | 25 December 2017 07:39 CET | Original file | https://www.mdpi.com/2076-3417/8/1/21/xml |
| article pdf uploaded. | 25 December 2017 07:39 CET | Updated version of record | https://www.mdpi.com/2076-3417/8/1/21/pdf |
| article pdf uploaded. | 24 December 2017 14:08 CET | Version of Record | https://www.mdpi.com/2076-3417/8/1/21/pdf-vor |
