Dergiler / Turkish Journal of Physics / 1995 / Cilt: 19 - Sayı: 12Donors and excitons in a parabolic quantum dot; an algebraic operator methodMohammad EL- SAIDDergiTurkish Journal of PhysicsSayı1995 · Cilt: 19 - Sayı: 12Sayfa1542–1549DOI—