TY - BOOK AU - Hromadka II,T.V.,et al ED - Pinder, G.F ED - Yen, Ch-Ch TI - Best approximation method: introduction T2 - Lecture notes in engineering 27 SN - 3-540-17572-5 U1 - 5.08+11.04 PY - 1987/// CY - Berlin PB - Springer ER -