TY - BOOK ID - 139990128 TI - Fourier analysis and approximation AU - Butzer, Paul L. AU - Nessel, Rolf J. PY - 1971 PB - Basel-Stuttgart Birkhäuser DB - UniCat UR - https://www.unicat.be/uniCat?func=search&query=sysid:139990128 AB - ER -