Minor refinements

Author: ashishjain87

student-contributions/BackPropagationBasicMatrixOperations.bib

@@ -0,0 +1,9 @@
+@misc{wiki:Matrix_calculus,
+   author = "Wikipedia",
+   title = "{Matrix calculus} --- {W}ikipedia{,} The Free Encyclopedia",
+   year = "2021",
+   url = {http://en.wikipedia.org/w/index.php?title=Matrix\%20calculus&oldid=1027030038},
+   note = "[Online; accessed 13-June-2021]"
+}
+
+@misc{li_krishna_xu_2021, place={Stanford}, title={Convolutional Neural Networks}, url={http://cs231n.stanford.edu/slides/2021/lecture_5.pdf}, journal={CS231N Lectures}, publisher={CA}, author={Li, Fei-Fei and Krishna, Ranjay and Xu, Danfei}, year={2021}, month={4}}