TY - BOOK ID - 136881142 TI - Problems in Differential Equations AU - Filippov, A. F. AU - Brenner, J. L. PY - 1963 PB - San Francisco W.H. Freeman DB - UniCat KW - Differential equations UR - https://www.unicat.be/uniCat?func=search&query=sysid:136881142 AB - ER -