APA
Ortiz E. L., International symposium on numerical analysis, . (1987). Numerical approximation of partial differential equations. Amsterdam: Elsevier Science.
Chicago
Ortiz Eduardo L, International symposium on numerical analysis, . 1987. Numerical approximation of partial differential equations. Amsterdam: Elsevier Science.
Harvard
Ortiz E. L., International symposium on numerical analysis, . (1987). Numerical approximation of partial differential equations. Amsterdam: Elsevier Science.
MLA
Ortiz Eduardo L, International symposium on numerical analysis, . Numerical approximation of partial differential equations. Amsterdam: Elsevier Science. 1987.