@article{10_4153_S0008414X20000607,
     author = {Heittokangas, Janne and Yu, Hui and Zemirni, Mohamed Amine},
     title = {On the number of linearly independent admissible solutions to linear differential and linear difference equations},
     journal = {Canadian journal of mathematics},
     pages = {1556--1591},
     year = {2021},
     volume = {73},
     number = {6},
     doi = {10.4153/S0008414X20000607},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/S0008414X20000607/}
}