Operational methods /

by Maslov, V. P. (Viktor Pavlovich)
Published 1976

Asymptotics of operator and pseudo-differential equations

by Maslov, V. P. (Viktor Pavlovich), Nazaikinskii, V. E.
Published 1988

Nonlinear Poisson brackets : geometry and quantization /

by Karasev, M. V. (Mikhail Vladimirovich)
Published 1993