On the irreducibility of Fibonacci and Lucas polynomials over finite fields. - Hidetaka Kitayama; Daisuke Shiomi (Finite Fields Their Appl., 2017)

Jeśmanowicz' conjecture for non-primitive Pythagorean triples. - Hidetaka Kitayama; Hiroyuki Tagawa; Keiichi Urahashi (Period. Math. Hung., 2023)