no. 2
A directional compactification of the complex Fermi surface
Compositio Mathematica, Tome 79 (1991) no. 2, pp. 205-229 
@article{CM_1991__79_2_205_0,
     author = {B\"attig, Daniel and Kn\"orrer, Horst and Trubowitz, Eugene},
     title = {A directional compactification of the complex {Fermi} surface},
     journal = {Compositio Mathematica},
     pages = {205--229},
     year = {1991},
     publisher = {Kluwer Academic Publishers},
     volume = {79},
     number = {2},
     mrnumber = {1117340},
     zbl = {0754.58038},
     language = {en},
     url = {https://www.numdam.org/item/CM_1991__79_2_205_0/}
}
TY  - JOUR
AU  - Bättig, Daniel
AU  - Knörrer, Horst
AU  - Trubowitz, Eugene
TI  - A directional compactification of the complex Fermi surface
JO  - Compositio Mathematica
PY  - 1991
SP  - 205
EP  - 229
VL  - 79
IS  - 2
PB  - Kluwer Academic Publishers
UR  - https://www.numdam.org/item/CM_1991__79_2_205_0/
LA  - en
ID  - CM_1991__79_2_205_0
ER  - 
%0 Journal Article
%A Bättig, Daniel
%A Knörrer, Horst
%A Trubowitz, Eugene
%T A directional compactification of the complex Fermi surface
%J Compositio Mathematica
%D 1991
%P 205-229
%V 79
%N 2
%I Kluwer Academic Publishers
%U https://www.numdam.org/item/CM_1991__79_2_205_0/
%G en
%F CM_1991__79_2_205_0
Bättig, Daniel; Knörrer, Horst; Trubowitz, Eugene. A directional compactification of the complex Fermi surface. Compositio Mathematica, Tome 79 (1991) no. 2, pp. 205-229. https://www.numdam.org/item/CM_1991__79_2_205_0/

[Bä] D. Bättig, A toroidal compactification of the Fermi surface for the discrete Laplace operator. Preprint, ETH Zürich 1989.

[Bo] G. Borg, Eine Umkehrung der Sturm-Liouvilleschen Eigenwertaufgabe, Acta Math. 78, 1-96 (1946). | Zbl | MR

[KT] H. Knörrer, E. Trubowitz, A directional compactification of the complex Bloch variety. Comm. Math. Helvetici 65, 114-149 (1990). | Zbl | MR

[SM] C. Siegel, J. Moser, Lectures on Celestial Mechanics, Springer-Verlag 1979. | MR