På Ostads hjemmeside ved Universitetet i Oslo ligger henvisninger til eldre publikasjoner. Her ligger det også artikler om temaet som kan lastes ned.
Ostad, S.A. (1997). Strategic competence: Issues of task specific strategies in arithmetic. Nordic Studies in Mathematics Education, 3, 7 32.
Ostad, S.A. (1997). Developmental differences in addition strategies: A comparison of mathematically disabled and mathematically normal children. British Journal of Educational Psychology, 67, 345 357.
Ostad, S. A. (1998). Developmental differences in solving simple arithmetic word problems and simple number fact problems: A comparison of mathematically normal and mathematically disabled children. Mathematical Cognition, 4(1), 1 19.
Ostad, S. A. (1998). Comorbidity between mathematics and spelling difficulties. Logopedics Phoniatrics Vocology, 23(4), 145 154.
Ostad, S.A.(1998). Strategy use differences between mathematically normal and mathematically disabled children. H. Nilsen (ed.): Learning Strategies and Skill Learning. Essays in honour of Nils Søvik. (ISBN 82 519 1340 3). Trondheim: Tapir.
Ostad, S.A. (1998). Subtraction strategies in developmental perspective: A comparison of mathematically normal and mathematically disabled children. Oliver, A.: Newstead, K. (eds.): PME22, 12 17 July 1998, Stellenbosch, South Africa, Volume 3 The 22 nd Conference of International Group for the Psychology of Mathematics Education. (ISBN 0771100X). Stellenbosch, South Africa: University of Stellenbosch.
Ostad, S.A. (1999). Developmental progression of subtraction strategies: A comparison of mathematically normal and mathematically disabled children. European Journal of Special Needs Education, 14 (1), 21 36.
Ostad, S.A. (1999). Mathematical difficulties. Studies of learner characteristics in developmental perspective. (ISBN 82 90363 79 6). Oslo: Department of Special Needs Education, University of Oslo.
Ostad, S.A. (1999). Elever med matematikkvansker. Studier av kunnskapsutviklingen i strategisk perspektiv. (ISBN 82 7477 012 9). Oslo: UNIPUB forlag. (Avd. i Akademika AS)
Hammervoll, T. & Ostad, S.A. (1999). Basiskunnskaper i matematikk. Prøveserie for grunnskolen. (ISBN 82-00-42344-3). Oslo:Univeritetsforlaget. Overtatt av Damm Undervisning (tel. 22471141 eller 22471139).
Ostad, S. A. (2000). Cognitive subtraction in a developmental perspective: Accuracy, speed of processing and strategy use differences in normal and mathematically disabled children. Focus on Learning Problems in mathematics, 22(2), 18-31
Ostad, S.A. (2004). Matematikklæring og matematikkvansker. En artikkelsamling. (kompendium). Oslo: UNIPUB forlag
Ostad,S.A. (2001). Matematikkvansker. Et resultat av forsinket eller kvalitativ forskjellig utvikling? Spesialpedagogikk, 3, 9-14.
Ostad, S.A. (2001). Understanding and handling numres. In B.H.Johnsen and M.D.Skjørten (eds.): Education – Specal Needs Education. An introduction. Oslo: UNIPUP, 203-224.
Ostad, S.A. (2003). Strategiopplæring i matematikk. Tangenten, 2, s. 21–25.
Ostad, S.A. (2003) . Fra egosentrisk til subvokal tale. Et for lite påaktet utviklingsperspektiv for å forebygge matematikkvansker? Spesialpedagogikk, 10, 38-43.
