并列题名：Statistical methods in the calculus of variations Statistical methods in the calculus of variations First course in the calculus of variations Fundamentals of the calculus of variations 并列题名：Statistical methods in diagnostic medicine 并列题名：Preliminary calculus of variations 并列题名：Practical methods in piano improvisation Statistical methods in quantum optics Statistical methods in the atmospheric sciences 并列题名：Analytical methods for human milk compositions