Sitnik S.M.

Siberian Electronic Mathematical Reports. Том 15. 2018. С. 1-10

Results in Mathematics. Том 72. 2017. С. 703-714

Electronic Journal of Differential Equations. Том 2017. 2017.

JOURNAL OF INEQUALITIES AND SPECIAL FUNCTIONS. Том 8. 2017. С. 49-67

JOURNAL OF INEQUALITIES AND SPECIAL FUNCTIONS. Том 8. 2017. С. 140-157

Matematicki Vesnik. Том 68. 2016. С. 225-231

Siberian Electronic Mathematical Reports. Том 13. 2016. С. 849-860

Problemy Analiza. Том 5. 2016. С. 3-19

Siberian Electronic Mathematical Reports. Том 13. 2016. С. 260-268