Junfeng Xu, Hongxun Yi. Solutions of higher order linear differential equations in an angle. Appl. Math. Lett., 22(4):484-489, 2009. [doi]
@article{XuY09:1,
title = {Solutions of higher order linear differential equations in an angle},
author = {Junfeng Xu and Hongxun Yi},
year = {2009},
doi = {10.1016/j.aml.2008.06.021},
url = {http://dx.doi.org/10.1016/j.aml.2008.06.021},
researchr = {https://researchr.org/publication/XuY09%3A1},
cites = {0},
citedby = {0},
journal = {Appl. Math. Lett.},
volume = {22},
number = {4},
pages = {484-489},
}