000 00440nam a2200169Ia 4500
082 _a515.35
_bG874.SP
100 _aGroen, P. P. N. De.
245 _aSingularly perturbed differential operators of second order
_b
260 _aAmsterdam
_bMathematisch Centrum
_c1976
300 _aix, 159p. Ref.
490 _aMathematical centre tracts
_v v. 68
500 _a
690 _a
700 _a
964 _a
_b
_c
_d
_e
_f
_g
921 _a13613
999 _c13613
_d13613