LU, Xiaolin. An Approximate Analytical Solution for Default-Free Zero-Coupon Bonds in a Two-Factor Vasicek Interest Rate Model with Stochastic Volatility. Journal of Social Science and Humanities, [S. l.], v. 8, n. 6, p. 47–50, 2026. DOI: 10.66069/ojspub.1811260610. Disponível em: https://bryanhousepub.com/index.php/jssh/article/view/3650. Acesso em: 12 jul. 2026.