book-chapter 1995 Vascular Changes During the Normal and Artificial Cycle ·doi:10.1007/978-3-642-79264-9_8
article 1994 Midluteal-phase vaginal color Doppler assessment of uterine artery impedance in a subfertile population Fertility and Sterility ·doi:10.1016/s0015-0282(16)56452-8