| article html file updated | 8 February 2020 02:57 CET | Update | https://www.mdpi.com/1996-1073/10/4/489 |
| article html file updated | 24 September 2019 04:14 CEST | Update | N/A |
| article html file updated | 4 May 2019 03:29 CEST | Update | N/A |
| article html file updated | 28 April 2017 06:08 CEST | Update | N/A |
| article html file updated | 7 April 2017 11:05 CEST | Original file | N/A |
| article xml uploaded. | 7 April 2017 11:04 CEST | Original file | https://www.mdpi.com/1996-1073/10/4/489/xml |
| article pdf uploaded. | 7 April 2017 11:04 CEST | Updated version of record | https://www.mdpi.com/1996-1073/10/4/489/pdf |
| article pdf uploaded. | 5 April 2017 15:28 CEST | Version of Record | https://www.mdpi.com/1996-1073/10/4/489/pdf-vor |
