| article html file updated | 7 February 2020 07:04 CET | Update | https://www.mdpi.com/1422-0067/17/4/539 |
| article html file updated | 21 September 2019 14:52 CEST | Update | N/A |
| article html file updated | 5 May 2019 19:01 CEST | Update | N/A |
| article html file updated | 27 March 2019 01:30 CET | Update | N/A |
| article html file updated | 28 April 2016 05:11 CEST | Update | N/A |
| article html file updated | 9 April 2016 13:53 CEST | Original file | N/A |
| article xml uploaded. | 9 April 2016 13:52 CEST | Original file | https://www.mdpi.com/1422-0067/17/4/539/xml |
| article pdf uploaded. | 9 April 2016 13:52 CEST | Version of Record | https://www.mdpi.com/1422-0067/17/4/539/pdf |
