{{Reflist|refs=<ref name="Harris"> {{cite book| last=Harris|first=Joe|authorlink = Joe Harris (mathematician)|year=1992|title=Algebraic Geometry - A first course|publisher= [[Springer Science+Business Media|Springer-Verlag]]| isbn=0-387-97716-3}} </ref> <ref name=Nagata56> {{Citation | last1=Nagata | first1=Masayoshi | author1-link=Masayoshi Nagata | title=On the imbedding problem of abstract varieties in projective varieties | mr=0088035 | year=1956 | journal=Memoirs of the College of Science, University of Kyoto. Series A: Mathematics | volume=30 | pages=71–82}} </ref> <ref name=Nagata57> {{Citation | last1=Nagata | first1=Masayoshi | author1-link=Masayoshi Nagata | title=On the imbeddings of abstract surfaces in projective varieties | mr=0094358 | year=1957 | journal=Memoirs of the College of Science, University of Kyoto. Series A: Mathematics | volume=30 | pages=231–235}} </ref> <ref name="Hartshorne"> {{cite book | last = Hartshorne | first = Robin | authorlink = Robin Hartshorne | year = 1977 | title = Algebraic Geometry | publisher = [[Springer Science+Business Media|Springer-Verlag]] | isbn = 0-387-90244-9 }} </ref>}}
