On Projective Planes of Order 12 Which Have a Subplane of Order 3, I. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1980)

The Classification of Projective Planes of Order 9 Which Possess an Involution. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1982)

Two New Semibiplanes. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1982)

A Generalization of a Result of L. Baumert and M. Hall About Projective Planes of Order 12. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1982)

Projective Planes of Order 12 Do Not Have a Four Group as a Collineation Group. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1982)

Answers on Two Questions about Semi-symmetric Designs. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1984)

Construction of two symmetric block designs for (71, 21, 6). - Zvonimir Janko; Tran van Trung (Discret. Math., 1985)

Construction of a New Symmetric Block Design for (78, 22, 6) with the Help of Tactical Decompositions. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1985)

A new biplane of order 9 with a small automorphism group. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1986)

Answers to two questions about semi-symmetric designs. - Zvonimir Janko; Tran van Trung (J. Comb. Theory A, 1986)

Cyclic 2-(91, 6, 1) designs with multiplier automorphisms. - Zvonimir Janko; Vladimir D. Tonchev (Discret. Math., 1991)

On Symmetric Designs with Parameters (176, 50, 14). - Zvonimir Janko (J. Comb. Theory A, 1995)

The Existence of Symmetric Designs with Parameters (189, 48, 12). - Zvonimir Janko (J. Comb. Theory A, 1997)

New Designs with Block Size 7. - Zvonimir Janko; Vladimir D. Tonchev (J. Comb. Theory A, 1998)

The Existence of a Bush-Type Hadamard Matrix of Order 324 and Two New Infinite Classes of Symmetric Designs. - Zvonimir Janko; Hadi Kharaghani; Vladimir D. Tonchev (Des. Codes Cryptogr., 2001)

The Existence of a Bush-type Hadamard Matrix of Order 36 and Two New Infinite Classes of Symmetric Designs. - Zvonimir Janko (J. Comb. Theory A, 2001)

A Block Negacyclic Bush-Type Hadamard Matrix and Two Strongly Regular Graphs. - Zvonimir Janko; Hadi Kharaghani (J. Comb. Theory A, 2002)