Absorption in No External World - 170 Issues in Mind-Only Buddhism — by Jeffrey Hopkins

Dynamic Responses to Dzong-ka-ba's The Essence of Eloquence III

Emptiness in the Mind-Only School of Buddhism - Dynamic Responses to Dzong-Ka-Ba's The Essence of Eloquence: I — by Jeffrey Hopkins

Meditation on Emptiness — by Jeffrey Hopkins

A clear exposition of the Prasangika-Madhyamaka view of emptiness as presented in the Gelukpa tradition of Tibetan Buddhism.

Mirror of Wisdom - Teachings on Emptiness — by Tsultim Gyeltsen

Commentaries on the emptiness section of Mind Training Like the Rays of the Sun  and The Heart Sutra.

Stillness, Insight and Emptiness - Buddhist Meditation From the Ground Up — by Lama Dudjom Dorjee

Instructions that will help beginning meditators establish a firm foundation in the practices that lead to direct realization.

Distinguishing the Views and Philosophies - Illuminating Emptiness in a Twentieth-Century Tibetan Buddhist Classic — by Bötrül

An annotated translation of an essential work of twentieth-century Tibetan Buddhist thought, one that explicates teachings on the Middle Way.

The Two Truths Debate - Tsongkhapa and Gorampa on the Middle Way — by Sonam Thakchoe

This work digs into the debate of how the two truths are defined and how they are related by looking at two figures. It shows how their philosophical positions have dramatic implications for how one approaches Buddhist practice and how one understands enlightenment itself.

Freedom From Extremes - Gorampa's Distinguishing the Views  and the Polemics of Emptiness — translated by Lobsang Dargyay & Jose Ignacio Cabezon

Fundamental concept of "emptiness" that avoid the traps of eternalism and nihilism.

The Treatise on the Great Virtue of Wisdom of Nagarjuna - Mahaprajnaparamitasastra  - in five volumes — compiled by Etienne Lamotte

Causality and Emptiness - The Wisdom of Nagarjuna — by Peter Della Santina

Significant works, concerned mostly to the doctrine of interdependent origination.