TA Alize rings are available from Peter White Cycles and Sheldon Brown. The Alize rings are beautifully machined aluminum alloy, and are ramped and pinned to work in a Shimano or other 130 BCD triple crankset. The teeth are thicker than Shimano's chainrings and I found it necessary to do some filing on the backside ot the tips of the teeth to make the shifting ideal. TA Specialties is a well established French company. They make several other chainrings and cranksets for various applications.

edit: If your crankset is 130mm BCD, the smallest possible middle chainring is a 38. You can get the 26 inner ring in 74mm BCD. TA does have Zephyr 110BCD triple cranksets and chainrings in smaller sizes. Not sure what you have but at least some Isoflow cranksets are 110/74 BCD, the TA Zephyr chainrings should fit those, check with Peter White or Sheldon Brown.

Al