%0 Journal Article %A E. M. Vechtomov %A D. V. Chuprakov %T The principal kernels of semifields of continuous positive functions %J Fundamentalʹnaâ i prikladnaâ matematika %D 2008 %P 87-107 %V 14 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/FPM_2008_14_4_a5/ %G ru %F FPM_2008_14_4_a5