TY - JOUR AU - I. V. Kolos AU - M. V. Kolos TI - An approximate analytical solution of a filtration problem JO - Numerical methods and programming PY - 2008 SP - 332 EP - 337 VL - 9 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMP_2008_9_3_a12/ LA - ru ID - VMP_2008_9_3_a12 ER -