Heller, E., Kaczmarek, L. K., Hunkapiller, M. W., Hood, L. E., & Strumwasser, F. (1980). Purification and primary structure of two neuroactive peptides that cause bag cell afterdischarge and egg-laying in Aplysia. Proc Natl Acad Sci U S A.

Heller, E., L. K. Kaczmarek, M. W. Hunkapiller, L. E. Hood, and F. Strumwasser. "Purification and Primary Structure of Two Neuroactive Peptides That Cause Bag Cell Afterdischarge and Egg-laying in Aplysia." Proc Natl Acad Sci U S A 1980.

Heller, E., et al. "Purification and Primary Structure of Two Neuroactive Peptides That Cause Bag Cell Afterdischarge and Egg-laying in Aplysia." Proc Natl Acad Sci U S A 1980.