000 00279nam a2200097Ia 4500
008 240404s9999 xx 000 0 und d
100 _aGilbert, Robert P.
245 0 _aFirst order elliptic systems
_cRobert P. Gilbert
260 _aLondon
_bAcademic Press
_c1983
942 _aIMAR
_cCART
999 _c34424
_d34424