The ...studies indicated that
Though application of
More history of ... can be found in __ et al
Studies have been completed to established
More history of ... can be found in __ et al
Studies have been completed to established
This study further shows that
Their work is based on the principle of
Little research has been conducted in applying ... to
The published information that is relevant to this research...
Little research has been conducted in applying ... to
The published information that is relevant to this research...
evolution in human development
model focuses on...
