MathSciNet bibliographic data MR291888 47F05 (35J99) Walker, Homer F. A Fredholm theory for a class of first-order elliptic partial differential operators in ${\bf R}\sp{n}$${\bf R}\sp{n}$. Trans. Amer. Math. Soc. 165 (1972), 75–86. Article

For users without a MathSciNet license , Relay Station allows linking from MR numbers in online mathematical literature directly to electronic journals and original articles. Subscribers receive the added value of full MathSciNet reviews.