Uchimata is one of the popular techniques in judo. Every major international competion, many smaller events and most club randori sessions throughout the world are punctuated by uchimata, the inner thigh throw.
Incredibly in depth and easy to follow as a beginner, intermediate and I'll assume advanced! If there's nothing you can learn from Sugai's study of Uchimata then I'm not sure what you're looking at Judo books for!