TY - BOOK AU - Birman, M. Sh. TI - Spectral theory and wave processes PB - Consultants Bureau PY - 1971 T2 - Topics in mathematical physics VL - v. 4 EP - v, 121 p. UR - http://ci.nii.ac.jp/ncid/BA03059637 SN - 0306184044 ER -