Enkyoji Buddhist Network
— Read on enkyojibuddhistnetwork.org/

Nichijo: The Testimony of John Provoo | 500 Yojanas
— Read on www.500yojanas.org/nichijo-the-testimony-of-john-provoo/

Two Buddhas Seated Side by Side | Princeton University Press
— Read on press.princeton.edu/books/hardcover/9780691174204/two-buddhas-seated-side-by-side

NIRC
— Read on nirc.nanzan-u.ac.jp/