EPJ

A trace formula, perturbation determinant and Levinson’s theorem for a class of star graphs

Muhammad Usman and Muhammad Danish Zia

Eur. Phys. J. Plus, 137 6 (2022) 654

Published online: 03 June 2022

DOI: 10.1140/epjp/s13360-022-02839-9

Muhammad Usman

Muhammad Danish Zia

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