Alsós is a Hungarian card game of the Jass family with bidding elements borrowed from central European Tarot games.[1] Also known as Vannak[2] and as Kaláber, the game is a variation of Klaberjass.[3]
. Parlett. David. David Parlett. The Oxford guide to card games. 1990. Oxford University Press. Oxford [England]. 0-19-214165-1. 297. registration.
. David Parlett. The Penguin Book of Card Games. Penguin Books. 2008. 9780141916101.