@MISC{SIN_COS3.MIZ,
  AUTHOR = {Mitsuishi, Takashi and Endou, Noboru and Ohkubo, Keiji},
  TITLE = {Trigonometric Functions on Complex Space},
  SECTION1 = {Definitions of Trigonometric Functions},
  SECTION2 = {Properties of Trigonometric Functions on Complex Space},
  DAY = {10},
  MONTH = {October},
  YEAR = {2002},
  ADDRESS1 = {Miyagi University},
  ADDRESS2 = {Gifu National College of Technology},
  ADDRESS3 = {Shinshu University\\Nagano},
  SUMMARY = {This article describes definitions of sine, cosine, 
  hyperbolic sine and
  hyperbolic cosine. Some of their basic properties are discussed.}}

