Answer:
Strombeck (1960) described a horizontal dermal bipedicle. One needs to avoid wide undermining of the skin and breast parenchyma. It was criticized for tricky inset of the nipple, difficulty moving the pedicle, and high incidence of nipple insensitivity.
McKissock (1976) described a vertical bipedicle mammoplasty in which the inferior limb contained a dermoparenchymal component. The superior flap is thinned of parenchyma leaving only dermis. The superior component preserves fullness in the upper breast.
Skoog (1963) described the lateral dermal pedicle (essentially a modified Strombeck), with most of the resection in the inferior and medial components.