Kambe, E., Hirata, R., Kato, M., Ando, H., Kennelly, E. J., Walker, G. A. H., Štefl, S., Tarasov, A. E. Nonradial pulsation modes in a Be star xi Oph. In: STOBIE, R. S., WHITELOCK, P. A., eds. Astrophysical application of stellar pulsation. Provo, Utah: Astronomical Society of the Pacific, 1995, s. 301-302.