Research paper - translated plagiarism?
Referencing the papers at the end is not sufficient.

Generally, the litmus test whether or not something is plagariasm is whether the reader is given an adequate impression of how much of the text is other peoples work. Readers don't always read entire papers, and in particular may not make it to the end.

In your case, I would suggest to state at the beginning what your two main sources are, and give some indication of how heavily you are drawing from them. Then, throughout the paper reference each bit you've taken from elsewhere by where it is coming from.