http://www.springer.com/birkhauser/mathematics/book/978-3-0346-0435-2 http://www.amazon.com/Homological-Semimodules-Semicontramodules-Monografie-Matematyczne/dp/3034604351/ref=sr_1_5?ie=UTF8&s=books&qid=1266268030&sr=1-5 http://www.lavoisier.fr/notice/frCWOA2KOAXKW2O2.html http://www.buch.de/buch/18666/994_homological_algebra_of_semimodules_and_semicontramodules__monografie_matematyczne__band_70.html http://pro.maruzen.jp/shop/disp/CSfLastGoodsPage_001.jsp?GOODS_NO=7486532&dispNo=001002005002004 И т.д.