| article html file updated | 7 February 2020 04:46 CET | Update | https://www.mdpi.com/1422-0067/17/2/258 |
| article html file updated | 5 May 2019 23:52 CEST | Update | N/A |
| article html file updated | 26 March 2019 21:09 CET | Original file | N/A |
| article pdf uploaded. | 19 February 2016 13:34 CET | Version of Record | https://www.mdpi.com/1422-0067/17/2/258/pdf |
| article xml uploaded. | 19 February 2016 13:34 CET | Original file | https://www.mdpi.com/1422-0067/17/2/258/xml |
