@article{Semenchuk_2009, title={Paradeterminants and formal exponential series: Array}, volume={1}, url={https://journals.pnu.edu.ua/index.php/cmp/article/view/2572}, abstractNote={<p>Formal exponential and logarithmic series using triangular matrices are investigated.</p>}, number={1}, journal={Carpathian Mathematical Publications}, author={Semenchuk , A.V.}, year={2009}, month={Jun.}, pages={85–91} }