diff --git a/src/math/polynomial/polynomial_factorization.cpp b/src/math/polynomial/polynomial_factorization.cpp
index e0f050411..220048a9a 100644
--- a/src/math/polynomial/polynomial_factorization.cpp
+++ b/src/math/polynomial/polynomial_factorization.cpp
@@ -16,7 +16,7 @@ Author:
 Notes:
 
    [1] Elwyn Ralph Berlekamp. Factoring Polynomials over Finite Fields. Bell System Technical Journal, 
-       46(8-10):1853–1859, 1967.
+       46(8-10):1853-1859, 1967.
    [2] Donald Ervin Knuth. The Art of Computer Programming, volume 2: Seminumerical Algorithms. Addison Wesley, third 
        edition, 1997.
    [3] Henri Cohen. A Course in Computational Algebraic Number Theory. Springer Verlag, 1993.
diff --git a/src/math/polynomial/polynomial_factorization.h b/src/math/polynomial/polynomial_factorization.h
index 48b4efd98..f069121ba 100644
--- a/src/math/polynomial/polynomial_factorization.h
+++ b/src/math/polynomial/polynomial_factorization.h
@@ -16,7 +16,7 @@ Author:
 Notes:
 
    [1] Elwyn Ralph Berlekamp. Factoring Polynomials over Finite Fields. Bell System Technical Journal, 
-       46(8-10):1853–1859, 1967.
+       46(8-10):1853-1859, 1967.
    [2] Donald Ervin Knuth. The Art of Computer Programming, volume 2: Seminumerical Algorithms. Addison Wesley, third 
        edition, 1997.
    [3] Henri Cohen. A Course in Computational Algebraic Number Theory. Springer Verlag, 1993.
diff --git a/src/math/polynomial/upolynomial_factorization.cpp b/src/math/polynomial/upolynomial_factorization.cpp
index a1e28e727..230d352f3 100644
--- a/src/math/polynomial/upolynomial_factorization.cpp
+++ b/src/math/polynomial/upolynomial_factorization.cpp
@@ -16,7 +16,7 @@ Author:
 Notes:
 
    [1] Elwyn Ralph Berlekamp. Factoring Polynomials over Finite Fields. Bell System Technical Journal, 
-       46(8-10):1853–1859, 1967.
+       46(8-10):1853-1859, 1967.
    [2] Donald Ervin Knuth. The Art of Computer Programming, volume 2: Seminumerical Algorithms. Addison Wesley, third 
        edition, 1997.
    [3] Henri Cohen. A Course in Computational Algebraic Number Theory. Springer Verlag, 1993.
diff --git a/src/math/polynomial/upolynomial_factorization.h b/src/math/polynomial/upolynomial_factorization.h
index e687786da..327fffc9c 100644
--- a/src/math/polynomial/upolynomial_factorization.h
+++ b/src/math/polynomial/upolynomial_factorization.h
@@ -16,7 +16,7 @@ Author:
 Notes:
 
    [1] Elwyn Ralph Berlekamp. Factoring Polynomials over Finite Fields. Bell System Technical Journal, 
-       46(8-10):1853–1859, 1967.
+       46(8-10):1853-1859, 1967.
    [2] Donald Ervin Knuth. The Art of Computer Programming, volume 2: Seminumerical Algorithms. Addison Wesley, third 
        edition, 1997.
    [3] Henri Cohen. A Course in Computational Algebraic Number Theory. Springer Verlag, 1993.
diff --git a/src/math/polynomial/upolynomial_factorization_int.h b/src/math/polynomial/upolynomial_factorization_int.h
index c076b2e6d..92d62301d 100644
--- a/src/math/polynomial/upolynomial_factorization_int.h
+++ b/src/math/polynomial/upolynomial_factorization_int.h
@@ -17,7 +17,7 @@ Author:
 Notes:
 
    [1] Elwyn Ralph Berlekamp. Factoring Polynomials over Finite Fields. Bell System Technical Journal, 
-       46(8-10):1853–1859, 1967.
+       46(8-10):1853-1859, 1967.
    [2] Donald Ervin Knuth. The Art of Computer Programming, volume 2: Seminumerical Algorithms. Addison Wesley, third 
        edition, 1997.
    [3] Henri Cohen. A Course in Computational Algebraic Number Theory. Springer Verlag, 1993.
diff --git a/src/muz_qe/dl_relation_manager.h b/src/muz_qe/dl_relation_manager.h
index 270e06f12..ecba3d598 100644
--- a/src/muz_qe/dl_relation_manager.h
+++ b/src/muz_qe/dl_relation_manager.h
@@ -3,7 +3,7 @@ Copyright (c) 2006 Microsoft Corporation
 
 Module Name:
 
-    dl_remation_manager.h
+    dl_relation_manager.h
 
 Abstract:
 
@@ -316,7 +316,7 @@ namespace datalog {
                 oldTgt:=tgt.clone();
                 tgt:=tgt \union src
                 if(tgt!=oldTgt) {
-                    delta:=delta \union src    //also “delta \union tgt” would work
+                    delta:=delta \union src    //also ?delta \union tgt? would work
                 }
             }
 
@@ -488,7 +488,7 @@ namespace datalog {
                 oldTgt:=tgt.clone();
                 tgt:=tgt \union src
                 if(tgt!=oldTgt) {
-                    delta:=delta \union src    //also “delta \union tgt” would work
+                    delta:=delta \union src    //also ?delta \union tgt? would work
                 }
             }
 
diff --git a/src/smt/smt_model_finder.h b/src/smt/smt_model_finder.h
index 20d9ba6ef..b89603912 100644
--- a/src/smt/smt_model_finder.h
+++ b/src/smt/smt_model_finder.h
@@ -33,7 +33,7 @@ Abstract:
       Lugano, Switzerland, 2010.
 
     - Bugs, Moles and Skeletons: Symbolic Reasoning for Software
-      Development, Leonardo de Moura, Nikolaj Bjørner, IJCAR,
+      Development, Leonardo de Moura, Nikolaj Bjorner, IJCAR,
       Edinburgh, Scotland, 2010.
 
 Author: