1.
Piętka M. A note on the increase of the operational function exp(λΣ_{k=1}^{n}A_{k}s^{p_k}). AMSil [Internet]. 30Jan.1990 [cited 16May2024];3:107-14. Available from: https://journals.us.edu.pl/index.php/AMSIL/article/view/14309