TY - DATA AU - W. Eckhaus AU - E.M. de Jager TI - Theory and Applications of Singular Perturbations T2 - Lecture Notes in Mathematics SN - 9783540393320 PY - 1982/// CY - Heidelberg PB - Springer Berlin KW - Mathematics and Statistics UR - https://doi.org/10.1007/BFb0094735 ER -