The localisation of primes in arithmetic progressions of irrational modulus Jörg Brüdern; Koichi Kawada — 2011 Colloquium Mathematicae A new method for counting primes in a Beatty sequence is proposed, and it is shown that an asymptotic formula can be obtained for the number of such primes in a short interval.
Slim exceptional sets for sums of fourth and fifth powers Koichi Kawada; Trevor D. Wooley — 2002 Acta Arithmetica
Additive representation in thin sequences, I : Waring's problem for cubes Jörg Brüdern; Koichi Kawada; Trevor D Wooley — 2001 Annales scientifiques de l'École Normale Supérieure