@article{10_4064_aa7957_12_2015,
     author = {Andr\'as Bir\'o and Kostadinka Lapkova},
     title = {The class number one problem for the real quadratic fields $\mathbb {Q}(\sqrt {(an)^2+4a})$},
     journal = {Acta Arithmetica},
     pages = {117--131},
     publisher = {mathdoc},
     volume = {172},
     number = {2},
     year = {2016},
     doi = {10.4064/aa7957-12-2015},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/aa7957-12-2015/}
}