%0 Journal Article %A V. P. Maslov %T An Exactly Solvable Superfluidity Model and the Phase Transition of the Zeroth Kind (Fountain Effect) %J Teoretičeskaâ i matematičeskaâ fizika %D 2004 %P 411-423 %V 141 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/TMF_2004_141_3_a5/ %G ru %F TMF_2004_141_3_a5