[1]
“On the Bessel Operator $\odot_{B}^{t}$ Related to the Bessel-Helmholtz and Bessel Klein-Gordon Operator”,
Eur. J. Pure Appl. Math.
, vol. 11, no. 4, pp. 922–928, Oct. 2018, doi:
10.29020/nybg.ejpam.v11i4.3319
.