Whitten, Robert Craig (1926- ). Physics of the lower ionosphere / R. C. Whitten, I. G. Poppoff. - Englewood Cliffs : Prentice-Hall, cop. 1965. - VIII, 232 s. : il. ; 24 cm. Bibliogr. s. 206-227. Indeks. Subjects--Topical Terms: Jonosfera.