| article html file updated | 9 February 2020 05:54 CET | Update | https://www.mdpi.com/1422-0067/19/2/504 |
| article html file updated | 30 September 2019 15:01 CEST | Update | - |
| article html file updated | 1 May 2019 20:06 CEST | Update | - |
| article html file updated | 17 April 2019 19:11 CEST | Update | - |
| article html file updated | 28 March 2019 21:45 CET | Update | - |
| article html file updated | 14 March 2018 18:54 CET | Update | - |
| article html file updated | 8 February 2018 06:19 CET | Original file | - |
| article xml uploaded. | 8 February 2018 06:17 CET | Original file | https://www.mdpi.com/1422-0067/19/2/504/xml |
| article pdf uploaded. | 8 February 2018 06:17 CET | Version of Record | https://www.mdpi.com/1422-0067/19/2/504/pdf |
