Nishitani, T. (2017). Cauchy problem for differential operators with double characteristics: Non-effectively hyperbolic characteristics. Springer.
Chicago Style (17th ed.) CitationNishitani, Tatsuo. Cauchy Problem for Differential Operators with Double Characteristics: Non-effectively Hyperbolic Characteristics. Cham: Springer, 2017.
MLA (9th ed.) CitationNishitani, Tatsuo. Cauchy Problem for Differential Operators with Double Characteristics: Non-effectively Hyperbolic Characteristics. Springer, 2017.
Warning: These citations may not always be 100% accurate.