diff --git a/docs/usage.rst b/docs/usage.rst
index ca3c2ae3..68f34655 100644
--- a/docs/usage.rst
+++ b/docs/usage.rst
@@ -32,7 +32,7 @@ This repository contains three independent CMake-based projects:
   - additionally to the dependencies of *./src* project, it uses:
 
     - `Catch2 <https://github.com/catchorg/Catch2>`_ library as a unit tests framework.
-    - `linear algebra <https://github.com/BobSteagall/wg21/tree/master/linear_algebra/code>`_
+    - `linear algebra <https://github.com/BobSteagall/wg21/tree/master/include>`_
       library based on proposal `P1385 <https://wg21.link/P1385>`_ used in some examples
       and tests.
     - `Doxygen <http://www.doxygen.nl>`_ to extract C++ entities information from the source
diff --git a/docs/use_cases/linear_algebra.rst b/docs/use_cases/linear_algebra.rst
index edefb482..6cc017b0 100644
--- a/docs/use_cases/linear_algebra.rst
+++ b/docs/use_cases/linear_algebra.rst
@@ -10,7 +10,7 @@ enough to be used with other Linear Algebra libraries existing on the market.
 
     All of the examples provided in this chapter refer to the official proposal of the
     Linear Algebra Library for the C++23 defined in `P1385 <https://wg21.link/P1385>`_
-    and its latest implementation from `GitHub <https://github.com/BobSteagall/wg21>`_
+    and its latest implementation from `GitHub <https://github.com/BobSteagall/wg21/tree/master/include>`_
     or `Conan <https://twonington.jfrog.io/artifactory/api/conan/conan-oss>`_.
     Also, to simplify the examples all of them assume::
 
diff --git a/src/core/CMakeLists.txt b/src/core/CMakeLists.txt
index 920e61dc..e73e63f7 100644
--- a/src/core/CMakeLists.txt
+++ b/src/core/CMakeLists.txt
@@ -23,15 +23,15 @@
 cmake_minimum_required(VERSION 3.15)
 
 # core library options
-set(${ProjectPrefix}DOWNCAST_MODE ON CACHE STRING "Select downcasting mode")
-set_property(CACHE ${ProjectPrefix}DOWNCAST_MODE PROPERTY STRINGS AUTO ON OFF)
+set(${projectPrefix}DOWNCAST_MODE ON CACHE STRING "Select downcasting mode")
+set_property(CACHE ${projectPrefix}DOWNCAST_MODE PROPERTY STRINGS AUTO ON OFF)
 
 # find dependencies
 find_package(gsl-lite CONFIG REQUIRED)
 
 # check if libc++ is being used
 include(CheckLibcxxInUse)
-check_libcxx_in_use(${ProjectPrefix}LIBCXX)
+check_libcxx_in_use(${projectPrefix}LIBCXX)
 
 # core library definition
 add_library(mp-units-core INTERFACE)
@@ -45,7 +45,7 @@ target_include_directories(mp-units-core ${unitsAsSystem} INTERFACE
 )
 
 if(CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
-    if(${ProjectPrefix}LIBCXX)
+    if(${projectPrefix}LIBCXX)
         find_package(range-v3 CONFIG REQUIRED)
         target_link_libraries(mp-units-core INTERFACE range-v3::range-v3)
     endif()
@@ -55,14 +55,14 @@ elseif(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
     )
 endif()
 
-if(DEFINED ${ProjectPrefix}DOWNCAST_MODE)
+if(DEFINED ${projectPrefix}DOWNCAST_MODE)
     set(downcast_mode_options OFF ON AUTO)
-    list(FIND downcast_mode_options "${${ProjectPrefix}DOWNCAST_MODE}" downcast_mode)
+    list(FIND downcast_mode_options "${${projectPrefix}DOWNCAST_MODE}" downcast_mode)
     if(downcast_mode EQUAL -1)
-        message(FATAL_ERROR "'${ProjectPrefix}DOWNCAST_MODE' should be one of ${downcast_mode_options} ('${${ProjectPrefix}DOWNCAST_MODE}' received)")
+        message(FATAL_ERROR "'${projectPrefix}DOWNCAST_MODE' should be one of ${downcast_mode_options} ('${${projectPrefix}DOWNCAST_MODE}' received)")
     else()
-        message(STATUS "${ProjectPrefix}DOWNCAST_MODE: ${${ProjectPrefix}DOWNCAST_MODE}")
-        target_compile_definitions(mp-units-core INTERFACE ${ProjectPrefix}DOWNCAST_MODE=${downcast_mode})
+        message(STATUS "${projectPrefix}DOWNCAST_MODE: ${${projectPrefix}DOWNCAST_MODE}")
+        target_compile_definitions(mp-units-core INTERFACE ${projectPrefix}DOWNCAST_MODE=${downcast_mode})
     endif()
 endif()