TY  - JOUR
AU  - V. Yu. Lotoreichik
TI  - Note on 2D Schr\"odinger operators with $\delta$-interactions on angles and crossing lines
JO  - Nanosistemy: fizika, himiâ, matematika
PY  - 2013
SP  - 166
EP  - 172
VL  - 4
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/NANO_2013_4_2_a0/
LA  - en
ID  - NANO_2013_4_2_a0
ER  -