TY - BOOK AU - Landis, E. M. AU - Rozhkovskaya, Tamara ; tr. TI - Second order equations of elliptic and parabolic type T2 - Translations of Mathematical monographs U1 - 515.35 PY - 1998/// CY - Providence PB - American Mathematical Society N1 - "Purchased under NBHM grant for the year 1998-99" ER -