| article html file updated | 8 February 2020 03:15 CET | Update | https://www.mdpi.com/2076-3921/6/2/28 |
| article html file updated | 24 September 2019 05:53 CEST | Update | N/A |
| article html file updated | 4 May 2019 02:52 CEST | Update | N/A |
| article html file updated | 28 June 2017 12:29 CEST | Update | N/A |
| article html file updated | 11 April 2017 07:17 CEST | Update | N/A |
| article xml uploaded. | 11 April 2017 07:16 CEST | Update | https://www.mdpi.com/2076-3921/6/2/28/xml |
| article pdf uploaded. | 11 April 2017 07:16 CEST | Updated version of record | https://www.mdpi.com/2076-3921/6/2/28/pdf |
| article html file updated | 10 April 2017 11:21 CEST | Original file | N/A |
| article pdf uploaded. | 10 April 2017 11:20 CEST | Version of Record | https://www.mdpi.com/2076-3921/6/2/28/pdf-vor |
