[ Sigma](NP℗  ℓ
Subtitle: pour violon et piano
By: A. Louvier.
Publisher: A. Leduc
Published: 1975
Place of publication: Paris
Subjects: Violin and piano music, Juvenile; Violin and piano music
Other titles: Sigma de NP deux moins un
Work titles: Sigma de NP deux moins un
Notes: In 2 versions, the 1st for students with up to 4 years of study, the 2d, with 5 years.

Duration: 3 min. (1st version) ; 4 min. (2d version)