| article html file updated | 7 February 2020 07:24 CET | Update | https://www.mdpi.com/1420-3049/21/4/504 |
| article html file updated | 21 September 2019 15:22 CEST | Update | N/A |
| article html file updated | 5 May 2019 18:23 CEST | Update | N/A |
| article html file updated | 27 March 2019 02:08 CET | Update | N/A |
| article html file updated | 17 September 2018 04:09 CEST | Update | N/A |
| article html file updated | 28 April 2016 12:00 CEST | Update | N/A |
| article html file updated | 16 April 2016 11:07 CEST | Original file | N/A |
| article xml uploaded. | 16 April 2016 11:06 CEST | Original file | https://www.mdpi.com/1420-3049/21/4/504/xml |
| article pdf uploaded. | 16 April 2016 11:06 CEST | Version of Record | https://www.mdpi.com/1420-3049/21/4/504/pdf |
