Hyde, S. T. and M. O'Keeffe (2016). "At sixes and sevens, and eights, and nines: schwarzites p 3, p = 7, 8, 9." Structural Chemistry: 1-9.

Examples are given of vertex and/or face-transitive p 3 (p = 7, 8, 9) tilings of periodic minimal surfaces. Infinite families of tilings, including aperiodic structures, are readily derived from some of these. They are of particular interest for theoretical studies of potential carbon allotropes.

http://dx.doi.org/10.1007/s11224-016-0782-1