Volume 14, Issue 1 Shapour Heidarkhani Kit Ian Kou Amjad Salari Three weak solutions for a degenerate nonlocal singular sub-linear problem Downloads Abstract PDF Full article PDF DOI { copied = true; setTimeout(() => copied = false, 2000) })" :aria-label="copied ? 'DOI copied' : 'Copy DOI'" :title="copied ? 'Copied' : 'Copy DOI'" > Find all available articles from these authors Shapour Heidarkhani Kit Ian Kou Amjad Salari Find more articles with the same keywords European option pricing nonlocal singular three solutions critical point theory Find more articles with the same subject classes 35J92 35J75 34B10 58E05