| article html file updated | 8 February 2020 02:28 CET | Update | https://www.mdpi.com/2076-3921/6/2/24 |
| article html file updated | 24 September 2019 01:28 CEST | Update | N/A |
| article html file updated | 4 May 2019 04:34 CEST | Update | N/A |
| article html file updated | 28 June 2017 12:31 CEST | Update | N/A |
| article html file updated | 29 March 2017 10:39 CEST | Original file | N/A |
| article xml uploaded. | 29 March 2017 10:38 CEST | Original file | https://www.mdpi.com/2076-3921/6/2/24/xml |
| article pdf uploaded. | 29 March 2017 10:38 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/2/24/pdf |
