TY - RPRT TI - A generalized Zel'dovich approximation to gravitational instability AU - Giavalisco, M. AU - Mancinelli, B. AU - Mancinelli, P. J. AU - Yahil, A. PY - 1993 UR - https://ntrs.nasa.gov/citations/19930057605 ID - 19930057605 ER -