Henderson, J: Boundary Value Problems for Systems of Differe Positive Solutions

"This well-written book is a collection of recent works by the authors who are pioneering researchers in the community of differential and difference equations...This text is a great resource for graduate students and scholars to learn classic methods and latest development in this field." --Zentralblatt MATH

"The monograph contains an extensive bibliography and is suitable, as a reference book, for many researchers specializing in positive solutions and graduate students interested in this field." --Mathematical Reviews