diff --git a/README.org b/README.org
index e1782c1..6ed7575 100644
--- a/README.org
+++ b/README.org
@@ -43,7 +43,7 @@ modern multicore processors.
 :PROPERTIES:
 :CUSTOM_ID: prospective-users
 :END:
-FDCP will be valuable in fieds where DCT is used extensively:
+FDCT will be valuable in fieds where DCT is used extensively:
 
 - Image processing and compression
 - Audio processing and compression
@@ -136,3 +136,7 @@ multithread=True, simd=True)
    [[https://coehuman.uodiyala.edu.iq/uploads/Coehuman%20library%20pdf/%D9%83%D8%AA%D8%A8%20%D8%A7%D9%84%D8%B1%D9%8A%D8%A7%D8%B6%D9%8A%D8%A7%D8%AA%20Mathematics%20books/Wavelets/25%20(2).pdf]]
 3. C. W. Kok, Fast algorithm for computing discrete cosine transform
    [[https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=558495]]
+4. Nayuki, Fast discrete cosine transform algorithms
+   [[https://www.nayuki.io/page/fast-discrete-cosine-transform-algorithms]]
+5. Nayuki, Free small FFT in multiple languages
+   [[https://www.nayuki.io/page/free-small-fft-in-multiple-languages]]
diff --git a/ref/README.org b/ref/README.org
index 74fd6b9..2befb38 100644
--- a/ref/README.org
+++ b/ref/README.org
@@ -2,4 +2,6 @@
 
 This reference implementation is provided by Nayuki. I greatly appreciate their contribution.
 
-For more details, please visit Nayuki's [[Website][https://www.nayuki.io/]]
+For more details, please visit Nayuki's website
+- https://www.nayuki.io/page/free-small-fft-in-multiple-languages
+- https://www.nayuki.io/page/fast-discrete-cosine-transform-algorithms