diff --git a/perfaware/homework.md b/perfaware/homework.md
index 19b8b2a7..567647bc 100644
--- a/perfaware/homework.md
+++ b/perfaware/homework.md
@@ -15,3 +15,4 @@ Below is a list of shared code and videos from people's solutions to the Perform
 * [@Said6289](https://github.com/Said6289) - [Solution to listings 37 - 40 in x64 assembly](https://github.com/Said6289/perf_aware_course/tree/main/instruction_decode). This was my first attempt to write something more substantial in assembly. It was very time-consuming and so I only did the first few assignments.
 * [@charlesastaylor](https://github.com/charlesastaylor) - Snake game in 8086 assembly ([gist](https://gist.github.com/charlesastaylor/18c7c8005fed9d0af1a3ee2b24fcd724)) ([youtube](https://youtu.be/s_S4-QHeFMc))
 * [@bitwitch](https://github.com/bitwitch) - 8086 simulator in C ([github](https://github.com/bitwitch/perfaware))
+* [@Koistinen](https://github.com/Koistinen) [ABC-klubben](https://www.abc.se/~m10051/008/haversine_parser.cpp). Parsing haversine data using duplicated mmap of same physical memory to simplify code while preserving performance on Linux. Parsing and computation part not yet optimized.