BibTex format
@article{Olver:2019:10.1137/19M1245888,
author = {Olver, S and Townsend, A and Vasil, G},
doi = {10.1137/19M1245888},
journal = {SIAM Journal on Scientific Computing},
pages = {A3728--A3756},
title = {A sparse spectral method on triangles},
url = {http://dx.doi.org/10.1137/19M1245888},
volume = {41},
year = {2019}
}