| article html file updated | 9 February 2020 09:12 CET | Update | https://www.mdpi.com/2218-1997/4/3/53 |
| article html file updated | 1 October 2019 10:10 CEST | Update | N/A |
| article html file updated | 1 May 2019 13:05 CEST | Update | N/A |
| article html file updated | 17 April 2019 12:46 CEST | Update | N/A |
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| article html file updated | 9 March 2018 08:50 CET | Update | N/A |
| article xml uploaded. | 9 March 2018 08:48 CET | Update | https://www.mdpi.com/2218-1997/4/3/53/xml |
| article pdf uploaded. | 9 March 2018 08:48 CET | Updated version of record | https://www.mdpi.com/2218-1997/4/3/53/pdf |
| article html file updated | 9 March 2018 07:55 CET | Original file | N/A |
| article pdf uploaded. | 9 March 2018 07:54 CET | Version of Record | https://www.mdpi.com/2218-1997/4/3/53/pdf-vor |