- Shaun M. Fallat; Charles R. Johnson; Ronald
L. Smith
*The general totally positive matrix completion problem with few unspecified entries,*

Electron. J. Linear Algebra 7 (2000), 1-20. - Ji Young Choi; Luz Maria DeAlba; Leslie Hogben; Mandi S. Maxwell; Amy Wangsness
*The P_0-matrix completion problem,*

Electron. J. Linear Algebra 9 (2002), 1-20. - Luz Maria DeAlba; Leslie Hogben; Bhaba Kumar Sarma
*The Q-matrix completion problem,*

Electron. J. Linear Algebra 18 (2009), 176-191.