Solitary waves of surface plasmon polariton via phase shifts under Doppler broadening and Kerr nonlinearityS. Ahmad, A. Ahmad, B. A. Bacha, A. A. Khan and M. S. Abdul JabarEur. Phys. J. Plus, 132 12 (2017) 506DOI: https://doi.org/10.1140/epjp/i2017-11760-9