  A rigorous analytical representation for the multiple scattering coefficients
of the fields radiated by an infinite grating of dielectric circular cylinders
excited by an obliquely incident plane electromagnetic wave is derived in terms
of the "well-known scattering coefficients of an isolated dielectric cylinder
at oblique incidence" and "Schl\"omilch series". In addition, a generalized
sum-integral grating equation is acquired for the multiple scattered amplitude
of a cylinder at oblique incidence in the grating in terms of the scattering
coefficients of the insulating dielectric circular cylinder at oblique
incidence.
