1. Mathematical Models of Electrodynamics;Il’inski,1991
2. Integral representations for spatial models of mathematical physics;Kravchenko,1996
3. Quaternionic time-harmonic Maxwell operator;Kravchenko;J. Phys., A–Math. Gen.,1995
4. On some analogues of the Hilbert formulas on the unit sphere for solenoidal and irrotational vector fields;Luna-Elizarrarás;Trans. Inst. Math. Natl. Acad. Sci. Ukraine,2013