Embedding-obstruction for products of non-singular, projective varieties. Magnar Dale (1979) Mathematica Scandinavica
Embeddings and Proper Holomorphic Maps of Strictly Pseudoconvex Domains into Polydiscs and Balls. Erik Low (1985) Mathematische Zeitschrift
Embeddings of the line in the plane. Lee Rudolph (1982) Journal für die reine und angewandte Mathematik
Embeddings of the line in the plane. S.S. Abhyankar, Tzuong-tsieng Moh (1975) Journal für die reine und angewandte Mathematik