| article html file updated | 8 February 2020 03:53 CET | Update | https://www.mdpi.com/1999-5903/9/2/14 |
| article html file updated | 24 September 2019 09:33 CEST | Update | N/A |
| article html file updated | 4 May 2019 01:39 CEST | Update | N/A |
| article html file updated | 30 June 2017 11:28 CEST | Update | N/A |
| article html file updated | 20 April 2017 11:59 CEST | Original file | N/A |
| article xml uploaded. | 20 April 2017 11:58 CEST | Original file | https://www.mdpi.com/1999-5903/9/2/14/xml |
| article pdf uploaded. | 20 April 2017 11:58 CEST | Updated version of record | https://www.mdpi.com/1999-5903/9/2/14/pdf |
| article pdf uploaded. | 19 April 2017 12:20 CEST | Version of Record | https://www.mdpi.com/1999-5903/9/2/14/pdf-vor |
