%0 Journal Article %A Tolev, Doychin %T On the exceptional set of Lagrange’s equation with three prime and one almost–prime variables %J Journal de théorie des nombres de Bordeaux %D 2005 %P 925-948 %V 17 %N 3 %I Université Bordeaux 1 %U http://www.numdam.org/articles/10.5802/jtnb.528/ %R 10.5802/jtnb.528 %G en %F JTNB_2005__17_3_925_0